5098 branch 6 update invalid blob count (#7407)

* 5098: Add RpcErrorTypes

Signed-off-by: Matilda Clerke <matilda.clerke@consensys.net>

---------

Signed-off-by: Matilda Clerke <matilda.clerke@consensys.net>
Signed-off-by: Matilda-Clerke <matilda.clerke@consensys.net>
Co-authored-by: Sally MacFarlane <macfarla.github@gmail.com>

ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/engine/AbstractEngineNewPayload.java

@@ -466,7 +466,7 @@ public abstract class AbstractEngineNewPayload extends ExecutionEngineJsonRpcMet
       // blob transactions must have at least one blob
       if (versionedHashes.isEmpty()) {
         return ValidationResult.invalid(
-            RpcErrorType.INVALID_PARAMS, "There must be at least one blob");
+            RpcErrorType.INVALID_BLOB_COUNT, "There must be at least one blob");
       }
       transactionVersionedHashes.addAll(versionedHashes.get());
     }
@@ -505,7 +505,7 @@ public abstract class AbstractEngineNewPayload extends ExecutionEngineJsonRpcMet
     if (protocolSpec.getGasCalculator().blobGasCost(transactionVersionedHashes.size())
         > protocolSpec.getGasLimitCalculator().currentBlobGasLimit()) {
       return ValidationResult.invalid(
-          RpcErrorType.INVALID_PARAMS,
+          RpcErrorType.INVALID_BLOB_COUNT,
           String.format("Invalid Blob Count: %d", transactionVersionedHashes.size()));
     }
     return ValidationResult.valid();