diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthFeeHistory.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthFeeHistory.java
index e2056ac94b..01a0802279 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthFeeHistory.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthFeeHistory.java
@@ -106,8 +106,15 @@ public class EthFeeHistory implements JsonRpcMethod {
           "Invalid highest block parameter (index 1)", RpcErrorType.INVALID_BLOCK_PARAMS, e);
     }
 
-    final Optional<List<Double>> maybeRewardPercentiles =
-        request.getOptionalParameter(2, Double[].class).map(Arrays::asList);
+    final Optional<List<Double>> maybeRewardPercentiles;
+    try {
+      maybeRewardPercentiles = request.getOptionalParameter(2, Double[].class).map(Arrays::asList);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid reward percentiles parameter (index 2)",
+          RpcErrorType.INVALID_REWARD_PERCENTILES_PARAMS,
+          e);
+    }
 
     final BlockHeader chainHeadHeader = blockchain.getChainHeadHeader();
     final long chainHeadBlockNumber = chainHeadHeader.getNumber();
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetProof.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetProof.java
index a20cd62f29..7c2f67b724 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetProof.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetProof.java
@@ -106,8 +106,13 @@ public class EthGetProof extends AbstractBlockParameterOrBlockHashMethod {
   }
 
   private List<UInt256> getStorageKeys(final JsonRpcRequestContext request) {
-    return Arrays.stream(request.getRequiredParameter(1, String[].class))
-        .map(UInt256::fromHexString)
-        .collect(Collectors.toList());
+    try {
+      return Arrays.stream(request.getRequiredParameter(1, String[].class))
+          .map(UInt256::fromHexString)
+          .collect(Collectors.toList());
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid storage keys parameters (index 1)", RpcErrorType.INVALID_STORAGE_KEYS_PARAMS, e);
+    }
   }
 }
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetStorageAt.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetStorageAt.java
index 7b84365b56..34ed62b632 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetStorageAt.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetStorageAt.java
@@ -56,7 +56,13 @@ public class EthGetStorageAt extends AbstractBlockParameterOrBlockHashMethod {
       throw new InvalidJsonRpcParameters(
           "Invalid address parameter (index 0)", RpcErrorType.INVALID_ADDRESS_PARAMS, e);
     }
-    final UInt256 position = request.getRequiredParameter(1, UInt256Parameter.class).getValue();
+    final UInt256 position;
+    try {
+      position = request.getRequiredParameter(1, UInt256Parameter.class).getValue();
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid position parameter (index 1)", RpcErrorType.INVALID_POSITION_PARAMS, e);
+    }
     return blockchainQueries
         .get()
         .storageAt(address, position, blockHash)
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthSubmitHashRate.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthSubmitHashRate.java
index 9db7edcc80..c0763e77f6 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthSubmitHashRate.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthSubmitHashRate.java
@@ -42,11 +42,17 @@ public class EthSubmitHashRate implements JsonRpcMethod {
     final String hashRate;
     try {
       hashRate = requestContext.getRequiredParameter(0, String.class);
-    } catch (Exception e) {
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
       throw new InvalidJsonRpcParameters(
           "Invalid hash rate parameter (index 0)", RpcErrorType.INVALID_HASH_RATE_PARAMS, e);
     }
-    final String id = requestContext.getRequiredParameter(1, String.class);
+    final String id;
+    try {
+      id = requestContext.getRequiredParameter(1, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid sealer ID parameter (index 1)", RpcErrorType.INVALID_SEALER_ID_PARAMS, e);
+    }
     return new JsonRpcSuccessResponse(
         requestContext.getRequest().getId(),
         miningCoordinator.submitHashRate(
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthSubmitWork.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthSubmitWork.java
index cebb2e7a00..9474fec7ba 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthSubmitWork.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthSubmitWork.java
@@ -65,7 +65,13 @@ public class EthSubmitWork implements JsonRpcMethod {
         throw new InvalidJsonRpcParameters(
             "Invalid mix hash parameter (index 2)", RpcErrorType.INVALID_MIX_HASH_PARAMS, e);
       }
-      Bytes powHash = Bytes.fromHexString(requestContext.getRequiredParameter(1, String.class));
+      Bytes powHash;
+      try {
+        powHash = Bytes.fromHexString(requestContext.getRequiredParameter(1, String.class));
+      } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+        throw new InvalidJsonRpcParameters(
+            "Invalid PoW hash parameter (index 1)", RpcErrorType.INVALID_POW_HASH_PARAMS, e);
+      }
       final PoWSolution solution = new PoWSolution(nonce, mixHash, null, powHash);
       final boolean result = miner.submitWork(solution);
       return new JsonRpcSuccessResponse(requestContext.getRequest().getId(), result);
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/engine/EngineExchangeCapabilities.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/engine/EngineExchangeCapabilities.java
index 0431898c78..624d9bebdd 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/engine/EngineExchangeCapabilities.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/engine/EngineExchangeCapabilities.java
@@ -20,9 +20,11 @@ import static org.hyperledger.besu.ethereum.api.jsonrpc.RpcMethod.ENGINE_PREPARE
 import org.hyperledger.besu.ethereum.ProtocolContext;
 import org.hyperledger.besu.ethereum.api.jsonrpc.RpcMethod;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.JsonRpcRequestContext;
+import org.hyperledger.besu.ethereum.api.jsonrpc.internal.exception.InvalidJsonRpcParameters;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods.ExecutionEngineJsonRpcMethod;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcResponse;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcSuccessResponse;
+import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.RpcErrorType;
 
 import java.util.List;
 import java.util.stream.Collectors;
@@ -55,7 +57,18 @@ public class EngineExchangeCapabilities extends ExecutionEngineJsonRpcMethod {
 
     LOG.atTrace()
         .setMessage("received remote capabilities: {}")
-        .addArgument(() -> requestContext.getRequiredParameter(0, String[].class))
+        .addArgument(
+            () -> {
+              try {
+                return requestContext.getRequiredParameter(0, String[].class);
+              } catch (
+                  Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+                throw new InvalidJsonRpcParameters(
+                    "Invalid remote capabilities parameters (index 0)",
+                    RpcErrorType.INVALID_REMOTE_CAPABILITIES_PARAMS,
+                    e);
+              }
+            })
         .log();
 
     final List<String> localCapabilities =
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivGetFilterChanges.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivGetFilterChanges.java
index 7b9a8d1478..bbd7189ffa 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivGetFilterChanges.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivGetFilterChanges.java
@@ -52,7 +52,15 @@ public class PrivGetFilterChanges implements JsonRpcMethod {
 
   @Override
   public JsonRpcResponse response(final JsonRpcRequestContext requestContext) {
-    final String privacyGroupId = requestContext.getRequiredParameter(0, String.class);
+    final String privacyGroupId;
+    try {
+      privacyGroupId = requestContext.getRequiredParameter(0, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 0)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
     final String filterId;
     try {
       filterId = requestContext.getRequiredParameter(1, String.class);
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivGetFilterLogs.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivGetFilterLogs.java
index 0e564772c0..4436c33b50 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivGetFilterLogs.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivGetFilterLogs.java
@@ -52,7 +52,15 @@ public class PrivGetFilterLogs implements JsonRpcMethod {
 
   @Override
   public JsonRpcResponse response(final JsonRpcRequestContext request) {
-    final String privacyGroupId = request.getRequiredParameter(0, String.class);
+    final String privacyGroupId;
+    try {
+      privacyGroupId = request.getRequiredParameter(0, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 0)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
     final String filterId;
     try {
       filterId = request.getRequiredParameter(1, String.class);
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivUninstallFilter.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivUninstallFilter.java
index 738c0b19cf..c1e122578a 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivUninstallFilter.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/PrivUninstallFilter.java
@@ -47,13 +47,21 @@ public class PrivUninstallFilter implements JsonRpcMethod {
 
   @Override
   public JsonRpcResponse response(final JsonRpcRequestContext request) {
-    final String privacyGroupId = request.getRequiredParameter(0, String.class);
+    final String privacyGroupId;
+    try {
+      privacyGroupId = request.getRequiredParameter(0, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 0)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
     final String filterId;
     try {
       filterId = request.getRequiredParameter(1, String.class);
     } catch (Exception e) {
       throw new InvalidJsonRpcParameters(
-          "Invalid filter ID paramter (index 1)", RpcErrorType.INVALID_FILTER_PARAMS, e);
+          "Invalid filter ID parameter (index 1)", RpcErrorType.INVALID_FILTER_PARAMS, e);
     }
 
     if (privacyController instanceof MultiTenancyPrivacyController) {
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivCall.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivCall.java
index 0418fc2474..e09d5966cf 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivCall.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivCall.java
@@ -65,7 +65,15 @@ public class PrivCall extends AbstractBlockParameterMethod {
   protected Object resultByBlockNumber(
       final JsonRpcRequestContext request, final long blockNumber) {
     final JsonCallParameter callParams = validateAndGetCallParams(request);
-    final String privacyGroupId = request.getRequiredParameter(0, String.class);
+    final String privacyGroupId;
+    try {
+      privacyGroupId = request.getRequiredParameter(0, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 0)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
 
     final String privacyUserId = privacyIdProvider.getPrivacyUserId(request.getUser());
 
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDebugGetStateRoot.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDebugGetStateRoot.java
index b6ea645dc3..9ee5d57b3b 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDebugGetStateRoot.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDebugGetStateRoot.java
@@ -72,7 +72,15 @@ public class PrivDebugGetStateRoot extends AbstractBlockParameterMethod {
   @Override
   protected Object resultByBlockNumber(
       final JsonRpcRequestContext requestContext, final long blockNumber) {
-    final String privacyGroupId = requestContext.getRequiredParameter(0, String.class);
+    final String privacyGroupId;
+    try {
+      privacyGroupId = requestContext.getRequiredParameter(0, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 0)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
     final String privacyUserId = privacyIdProvider.getPrivacyUserId(requestContext.getUser());
     if (LOG.isTraceEnabled()) {
       LOG.trace("Executing {}", getName());
@@ -97,7 +105,7 @@ public class PrivDebugGetStateRoot extends AbstractBlockParameterMethod {
       }
     } catch (final Exception e) {
       return new JsonRpcErrorResponse(
-          requestContext.getRequest().getId(), RpcErrorType.INVALID_PARAMS);
+          requestContext.getRequest().getId(), RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS);
     }
 
     if (privacyGroup.isEmpty()) {
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDeletePrivacyGroup.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDeletePrivacyGroup.java
index db0c11ea5a..5c6f929c5c 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDeletePrivacyGroup.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDeletePrivacyGroup.java
@@ -18,11 +18,13 @@ import static org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.RpcErr
 
 import org.hyperledger.besu.ethereum.api.jsonrpc.RpcMethod;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.JsonRpcRequestContext;
+import org.hyperledger.besu.ethereum.api.jsonrpc.internal.exception.InvalidJsonRpcParameters;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods.JsonRpcMethod;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.privacy.methods.PrivacyIdProvider;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcErrorResponse;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcResponse;
 import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcSuccessResponse;
+import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.RpcErrorType;
 import org.hyperledger.besu.ethereum.privacy.MultiTenancyValidationException;
 import org.hyperledger.besu.ethereum.privacy.PrivacyController;
 
@@ -50,7 +52,15 @@ public class PrivDeletePrivacyGroup implements JsonRpcMethod {
   public JsonRpcResponse response(final JsonRpcRequestContext requestContext) {
     LOG.trace("Executing {}", RpcMethod.PRIV_DELETE_PRIVACY_GROUP.getMethodName());
 
-    final String privacyGroupId = requestContext.getRequiredParameter(0, String.class);
+    final String privacyGroupId;
+    try {
+      privacyGroupId = requestContext.getRequiredParameter(0, String.class);
+    } catch (Exception e) {
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 0)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
 
     final String response;
     try {
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetCode.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetCode.java
index 0010b8e052..5d9498f3bd 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetCode.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetCode.java
@@ -59,7 +59,15 @@ public class PrivGetCode extends AbstractBlockParameterMethod {
   @Override
   protected String resultByBlockNumber(
       final JsonRpcRequestContext request, final long blockNumber) {
-    final String privacyGroupId = request.getRequiredParameter(0, String.class);
+    final String privacyGroupId;
+    try {
+      privacyGroupId = request.getRequiredParameter(0, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 0)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
     final Address address;
     try {
       address = request.getRequiredParameter(1, Address.class);
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetEeaTransactionCount.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetEeaTransactionCount.java
index 8fa43b79e3..7bdba8824a 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetEeaTransactionCount.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetEeaTransactionCount.java
@@ -73,8 +73,20 @@ public class PrivGetEeaTransactionCount implements JsonRpcMethod {
       throw new InvalidJsonRpcParameters(
           "Invalid address parameter (index 0)", RpcErrorType.INVALID_ADDRESS_PARAMS, e);
     }
-    final String privateFrom = requestContext.getRequiredParameter(1, String.class);
-    final String[] privateFor = requestContext.getRequiredParameter(2, String[].class);
+    final String privateFrom;
+    try {
+      privateFrom = requestContext.getRequiredParameter(1, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid private from parameter (index 1)", RpcErrorType.INVALID_PRIVATE_FROM_PARAMS, e);
+    }
+    final String[] privateFor;
+    try {
+      privateFor = requestContext.getRequiredParameter(2, String[].class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid private for parameter (index 2)", RpcErrorType.INVALID_PRIVATE_FOR_PARAMS, e);
+    }
 
     final String privacyUserId = privacyIdProvider.getPrivacyUserId(requestContext.getUser());
 
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetLogs.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetLogs.java
index abb6411b00..d0c75da33f 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetLogs.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetLogs.java
@@ -62,7 +62,15 @@ public class PrivGetLogs implements JsonRpcMethod {
 
   @Override
   public JsonRpcResponse response(final JsonRpcRequestContext requestContext) {
-    final String privacyGroupId = requestContext.getRequiredParameter(0, String.class);
+    final String privacyGroupId;
+    try {
+      privacyGroupId = requestContext.getRequiredParameter(0, String.class);
+    } catch (Exception e) {
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 0)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
     final FilterParameter filter;
     try {
       filter = requestContext.getRequiredParameter(1, FilterParameter.class);
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetTransactionCount.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetTransactionCount.java
index b51f0fc36f..2cbcc65535 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetTransactionCount.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetTransactionCount.java
@@ -64,7 +64,15 @@ public class PrivGetTransactionCount implements JsonRpcMethod {
       throw new InvalidJsonRpcParameters(
           "Invalid address parameter (index 0)", RpcErrorType.INVALID_ADDRESS_PARAMS, e);
     }
-    final String privacyGroupId = requestContext.getRequiredParameter(1, String.class);
+    final String privacyGroupId;
+    try {
+      privacyGroupId = requestContext.getRequiredParameter(1, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 1)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
 
     try {
       final long nonce =
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivNewFilter.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivNewFilter.java
index f9a080c72f..e73b0c141c 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivNewFilter.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivNewFilter.java
@@ -50,7 +50,15 @@ public class PrivNewFilter implements JsonRpcMethod {
 
   @Override
   public JsonRpcResponse response(final JsonRpcRequestContext request) {
-    final String privacyGroupId = request.getRequiredParameter(0, String.class);
+    final String privacyGroupId;
+    try { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      privacyGroupId = request.getRequiredParameter(0, String.class);
+    } catch (Exception e) {
+      throw new InvalidJsonRpcParameters(
+          "Invalid privacy group ID parameter (index 0)",
+          RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+          e);
+    }
     final FilterParameter filter;
     try {
       filter = request.getRequiredParameter(1, FilterParameter.class);
diff --git a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/websocket/subscription/request/SubscriptionRequestMapper.java b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/websocket/subscription/request/SubscriptionRequestMapper.java
index d9099e697d..7235a81987 100644
--- a/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/websocket/subscription/request/SubscriptionRequestMapper.java
+++ b/ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/websocket/subscription/request/SubscriptionRequestMapper.java
@@ -32,8 +32,15 @@ public class SubscriptionRequestMapper {
     try {
       final WebSocketRpcRequest webSocketRpcRequestBody = validateRequest(jsonRpcRequestContext);
 
-      final SubscriptionType subscriptionType =
-          webSocketRpcRequestBody.getRequiredParameter(0, SubscriptionType.class);
+      final SubscriptionType subscriptionType;
+      try {
+        subscriptionType = webSocketRpcRequestBody.getRequiredParameter(0, SubscriptionType.class);
+      } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+        throw new InvalidJsonRpcParameters(
+            "Invalid subscription type parameter (index 0)",
+            RpcErrorType.INVALID_SUBSCRIPTION_PARAMS,
+            e);
+      }
       switch (subscriptionType) {
         case NEW_BLOCK_HEADERS:
           {
@@ -60,8 +67,13 @@ public class SubscriptionRequestMapper {
   }
 
   private boolean includeTransactions(final WebSocketRpcRequest webSocketRpcRequestBody) {
-    final Optional<SubscriptionParam> params =
-        webSocketRpcRequestBody.getOptionalParameter(1, SubscriptionParam.class);
+    final Optional<SubscriptionParam> params;
+    try {
+      params = webSocketRpcRequestBody.getOptionalParameter(1, SubscriptionParam.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid subscription parameter (index 1)", RpcErrorType.INVALID_SUBSCRIPTION_PARAMS, e);
+    }
     return params.isPresent() && params.get().includeTransaction();
   }
 
@@ -88,8 +100,16 @@ public class SubscriptionRequestMapper {
     try {
       final WebSocketRpcRequest webSocketRpcRequestBody = validateRequest(jsonRpcRequestContext);
 
-      final long subscriptionId =
-          webSocketRpcRequestBody.getRequiredParameter(0, UnsignedLongParameter.class).getValue();
+      final long subscriptionId;
+      try {
+        subscriptionId =
+            webSocketRpcRequestBody.getRequiredParameter(0, UnsignedLongParameter.class).getValue();
+      } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+        throw new InvalidJsonRpcParameters(
+            "Invalid subscription ID parameter (index 0)",
+            RpcErrorType.INVALID_SUBSCRIPTION_PARAMS,
+            e);
+      }
       return new UnsubscribeRequest(subscriptionId, webSocketRpcRequestBody.getConnectionId());
     } catch (final Exception e) {
       throw new InvalidSubscriptionRequestException("Error parsing unsubscribe request", e);
@@ -102,9 +122,24 @@ public class SubscriptionRequestMapper {
     try {
       final WebSocketRpcRequest webSocketRpcRequestBody = validateRequest(jsonRpcRequestContext);
 
-      final String privacyGroupId = webSocketRpcRequestBody.getRequiredParameter(0, String.class);
-      final SubscriptionType subscriptionType =
-          webSocketRpcRequestBody.getRequiredParameter(1, SubscriptionType.class);
+      final String privacyGroupId;
+      try {
+        privacyGroupId = webSocketRpcRequestBody.getRequiredParameter(0, String.class);
+      } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+        throw new InvalidJsonRpcParameters(
+            "Invalid privacy group ID parameter (index 0)",
+            RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+            e);
+      }
+      final SubscriptionType subscriptionType;
+      try {
+        subscriptionType = webSocketRpcRequestBody.getRequiredParameter(1, SubscriptionType.class);
+      } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+        throw new InvalidJsonRpcParameters(
+            "Invalid subscription type parameter (index 1)",
+            RpcErrorType.INVALID_SUBSCRIPTION_PARAMS,
+            e);
+      }
 
       switch (subscriptionType) {
         case LOGS:
@@ -142,9 +177,25 @@ public class SubscriptionRequestMapper {
     try {
       final WebSocketRpcRequest webSocketRpcRequestBody = validateRequest(jsonRpcRequestContext);
 
-      final String privacyGroupId = webSocketRpcRequestBody.getRequiredParameter(0, String.class);
-      final long subscriptionId =
-          webSocketRpcRequestBody.getRequiredParameter(1, UnsignedLongParameter.class).getValue();
+      final String privacyGroupId;
+      try {
+        privacyGroupId = webSocketRpcRequestBody.getRequiredParameter(0, String.class);
+      } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+        throw new InvalidJsonRpcParameters(
+            "Invalid privacy group ID parameter (index 0)",
+            RpcErrorType.INVALID_PRIVACY_GROUP_PARAMS,
+            e);
+      }
+      final long subscriptionId;
+      try {
+        subscriptionId =
+            webSocketRpcRequestBody.getRequiredParameter(1, UnsignedLongParameter.class).getValue();
+      } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+        throw new InvalidJsonRpcParameters(
+            "Invalid subscription ID parameter (index 1)",
+            RpcErrorType.INVALID_SUBSCRIPTION_PARAMS,
+            e);
+      }
       return new PrivateUnsubscribeRequest(
           subscriptionId, webSocketRpcRequestBody.getConnectionId(), privacyGroupId);
     } catch (final Exception e) {
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/JsonRpcHttpServiceTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/JsonRpcHttpServiceTest.java
index 7be6b7499e..dcfd198d6e 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/JsonRpcHttpServiceTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/JsonRpcHttpServiceTest.java
@@ -2033,7 +2033,7 @@ public class JsonRpcHttpServiceTest extends JsonRpcHttpServiceTestBase {
       assertThat(resp.code()).isEqualTo(200);
       // Check general format of result
       final JsonObject json = new JsonObject(resp.body().string());
-      final RpcErrorType expectedError = RpcErrorType.INVALID_PARAMS;
+      final RpcErrorType expectedError = RpcErrorType.INVALID_POSITION_PARAMS;
       testHelper.assertValidJsonRpcError(
           json, id, expectedError.getCode(), expectedError.getMessage());
     }
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetProofTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetProofTest.java
index 3cf24df3d4..06a4b9d0e7 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetProofTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetProofTest.java
@@ -120,7 +120,7 @@ class EthGetProofTest {
 
     Assertions.assertThatThrownBy(() -> method.response(request))
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessageContaining("Missing required json rpc parameter at index 1");
+        .hasMessageContaining("Invalid storage keys parameters (index 1)");
   }
 
   @Test
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivCallTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivCallTest.java
index 0919ea48e9..cc5169d75d 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivCallTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivCallTest.java
@@ -173,8 +173,7 @@ public class PrivCallTest {
 
     assertThat(thrown)
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasNoCause()
-        .hasMessage("Missing required json rpc parameter at index 0");
+        .hasMessage("Invalid privacy group ID parameter (index 0)");
   }
 
   private JsonCallParameter callParameter() {
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDebugGetStateRootTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDebugGetStateRootTest.java
index a7a4f6f590..c730be1db8 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDebugGetStateRootTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivDebugGetStateRootTest.java
@@ -82,8 +82,7 @@ public class PrivDebugGetStateRootTest {
 
     assertThat(thrown)
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasNoCause()
-        .hasMessage("Missing required json rpc parameter at index 0");
+        .hasMessage("Invalid privacy group ID parameter (index 0)");
   }
 
   @Test
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetFilterChangesTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetFilterChangesTest.java
index cf89a4bbca..3b9f5c8131 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetFilterChangesTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetFilterChangesTest.java
@@ -81,7 +81,7 @@ public class PrivGetFilterChangesTest {
 
     assertThatThrownBy(() -> method.response(request))
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessageContaining("Missing required json rpc parameter at index 0");
+        .hasMessageContaining("Invalid privacy group ID parameter (index 0)");
   }
 
   @Test
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetFilterLogsTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetFilterLogsTest.java
index 1c5be87572..c055988271 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetFilterLogsTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetFilterLogsTest.java
@@ -75,7 +75,7 @@ public class PrivGetFilterLogsTest {
 
     assertThatThrownBy(() -> method.response(request))
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessageContaining("Missing required json rpc parameter at index 0");
+        .hasMessageContaining("Invalid privacy group ID parameter (index 0)");
   }
 
   @Test
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetLogsTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetLogsTest.java
index d06b47ee10..9426f21478 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetLogsTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivGetLogsTest.java
@@ -87,7 +87,7 @@ public class PrivGetLogsTest {
 
     assertThatThrownBy(() -> method.response(request))
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessageContaining("Missing required json rpc parameter at index 0");
+        .hasMessageContaining("Invalid privacy group ID parameter (index 0)");
   }
 
   @Test
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivNewFilterTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivNewFilterTest.java
index 696e3333ca..855da64b01 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivNewFilterTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivNewFilterTest.java
@@ -78,7 +78,7 @@ public class PrivNewFilterTest {
 
     assertThatThrownBy(() -> method.response(request))
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessageContaining("Missing required json rpc parameter at index 0");
+        .hasMessageContaining("Invalid privacy group ID parameter (index 0)");
   }
 
   @Test
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivUninstallFilterTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivUninstallFilterTest.java
index 9a60d60d72..74935692e8 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivUninstallFilterTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/privacy/methods/priv/PrivUninstallFilterTest.java
@@ -61,7 +61,7 @@ public class PrivUninstallFilterTest {
 
     assertThatThrownBy(() -> method.response(request))
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessageContaining("Missing required json rpc parameter at index 0");
+        .hasMessageContaining("Invalid privacy group ID parameter (index 0)");
   }
 
   @Test
@@ -70,7 +70,7 @@ public class PrivUninstallFilterTest {
 
     assertThatThrownBy(() -> method.response(request))
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessageContaining("Invalid filter ID paramter (index 1)");
+        .hasMessageContaining("Invalid filter ID parameter (index 1)");
   }
 
   @Test
diff --git a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/websocket/subscription/request/SubscriptionRequestMapperTest.java b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/websocket/subscription/request/SubscriptionRequestMapperTest.java
index 80bb9b05dc..f560dfaa08 100644
--- a/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/websocket/subscription/request/SubscriptionRequestMapperTest.java
+++ b/ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/websocket/subscription/request/SubscriptionRequestMapperTest.java
@@ -83,7 +83,7 @@ public class SubscriptionRequestMapperTest {
         .isInstanceOf(InvalidSubscriptionRequestException.class)
         .getCause()
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessage("Missing required json rpc parameter at index 0");
+        .hasMessage("Invalid subscription type parameter (index 0)");
   }
 
   @Test
@@ -138,7 +138,7 @@ public class SubscriptionRequestMapperTest {
         .isInstanceOf(InvalidSubscriptionRequestException.class)
         .getCause()
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessageContaining("Invalid json rpc parameter at index 1");
+        .hasMessageContaining("Invalid subscription parameter (index 1)");
   }
 
   @Test
@@ -372,7 +372,7 @@ public class SubscriptionRequestMapperTest {
         .isInstanceOf(InvalidSubscriptionRequestException.class)
         .getCause()
         .isInstanceOf(InvalidJsonRpcParameters.class)
-        .hasMessageContaining("Invalid json rpc parameter at index 0");
+        .hasMessageContaining("Invalid subscription type parameter (index 0)");
   }
 
   @Test
diff --git a/ethereum/stratum/src/main/java/org/hyperledger/besu/ethereum/stratum/StratumProtocol.java b/ethereum/stratum/src/main/java/org/hyperledger/besu/ethereum/stratum/StratumProtocol.java
index 7f928fbdda..3f13a56880 100644
--- a/ethereum/stratum/src/main/java/org/hyperledger/besu/ethereum/stratum/StratumProtocol.java
+++ b/ethereum/stratum/src/main/java/org/hyperledger/besu/ethereum/stratum/StratumProtocol.java
@@ -87,7 +87,13 @@ public interface StratumProtocol {
       throw new InvalidJsonRpcParameters(
           "Invalid hash rate parameter (index 0)", RpcErrorType.INVALID_HASH_RATE_PARAMS, e);
     }
-    final String id = message.getRequiredParameter(1, String.class);
+    final String id;
+    try {
+      id = message.getRequiredParameter(1, String.class);
+    } catch (Exception e) { // TODO:replace with JsonRpcParameter.JsonRpcParameterException
+      throw new InvalidJsonRpcParameters(
+          "Invalid sealer ID parameter (index 1)", RpcErrorType.INVALID_SEALER_ID_PARAMS, e);
+    }
     String response;
     try {
       response =