How To Fix CNVMBT438 - Unknown error during RFC call

CNVMBT438 - Overview

• Message type: E = Error

• Message class: CNVMBT - Messages for MBT/API/PCL

• Message number: 438

• Message text: Unknown error during RFC call

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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CNVMBT438 - Details

• The SAP error message CNVMBT438: Unknown error during RFC call typically occurs during a Remote Function Call (RFC) in the context of data migration or conversion processes, often related to the SAP S/4HANA Migration Cockpit or other data transfer tools. This error can be caused by various issues, and troubleshooting it may require a systematic approach.
  Possible Causes:
  
  Network Issues: Problems with the network connection between the systems involved in the RFC call can lead to this error.
  Authorization Issues: The user executing the RFC call may not have the necessary authorizations to perform the operation.
  Configuration Errors: Incorrect configuration settings in the RFC destination or the related systems can cause the call to fail.
  System Performance: High load on the SAP system or the target system can lead to timeouts or failures in processing the RFC call.
  Data Issues: If the data being processed has inconsistencies or is not in the expected format, it can