How To Fix /BSNAGT/MESSAGE402 - Payload length after security is &1 (was &2 before security)

SAP Error Message - Details

• Message type: E = Error

• Message class: /BSNAGT/MESSAGE -

• Message number: 402

• Message text: Payload length after security is &1 (was &2 before security)

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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Smart SAP Assistant

• What is the cause and solution for SAP error message /BSNAGT/MESSAGE402 - Payload length after security is &1 (was &2 before security) ?

  The SAP error message /BSNAGT/MESSAGE402 indicates an issue related to the payload length of a message after security measures (like encryption or signing) have been applied. The message provides two values: the payload length after security (&1) and the payload length before security (&2). This discrepancy often points to a problem with the way the message is being processed, particularly in the context of secure communication protocols.
  Cause:
  
  Payload Size Limitations: The payload size after security may exceed the maximum allowed size for the transport layer or the receiving system. This can happen if the original payload is too large or if the security measures add significant overhead.
  Configuration Issues: There may be misconfigurations in the security settings, such as incorrect encryption algorithms or parameters that lead to unexpected increases in payload size.
  Data Corruption: The data being sent may be corrupted or improperly formatted, leading to discrepancies in the expected payload size.
  Protocol Mismatch: If there is a mismatch in the expected security protocols between the sender and receiver, it can lead to issues in how the payload is processed.
  
  Solution:
  
  Check Payload Size: Review the size of the original payload and ensure it is within acceptable limits for the transport layer. If necessary, consider breaking the payload into smaller chunks.
  Review Security Configuration: Verify the security settings in both the sending and receiving systems. Ensure that the same encryption and signing algorithms are being used and that they are configured correctly.
  Test with Smaller Payloads: Try sending smaller payloads to see if the issue persists. This can help isolate whether the problem is related to payload size or configuration.
  Monitor Logs: Check the application and security logs for any additional error messages or warnings that could provide more context about the issue.
  Update SAP Notes: Look for any relevant SAP Notes that may address this specific error or provide guidance on configuration settings.
  Consult Documentation: Review the documentation for the specific SAP modules or components involved in the message processing to ensure compliance with best practices.
  
  Related Information:
  
  SAP Security Protocols: Familiarize yourself with the security protocols used in your SAP environment, such as SSL/TLS, and how they impact message sizes.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the /BSNAGT/MESSAGE402 error message.