How To Fix TQ491 - START Preparing to append & to the buffer of (phase type, release) = &, &

SAP Error Message - Details

• Message type: E = Error

• Message class: TQ - SAPup Messages

• Message number: 491

• Message text: START Preparing to append & to the buffer of (phase type, release) = &, &

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 TQ491 - START Preparing to append & to the buffer of (phase type, release) = &, & ?

  The SAP error message TQ491 typically indicates an issue related to the transport management system (TMS) in SAP. This error occurs during the transport process, particularly when the system is trying to prepare to append data to a buffer for a specific transport request.
  Cause:
  
  Transport Buffer Issues: The transport buffer may be full or not functioning correctly, preventing new data from being appended.
  Authorization Issues: The user may not have the necessary authorizations to perform the transport operation.
  System Configuration: There may be misconfigurations in the transport landscape or TMS settings.
  Network Issues: Connectivity problems between the systems involved in the transport process can lead to this error.
  Phase Type and Release Mismatch: The phase type or release specified in the error message may not match the expected values for the transport request.
  
  Solution:
  
  
  Check Transport Buffer: 
  
  Use transaction code ST22 to check for dumps related to the transport buffer.
  Use transaction code SE01 to check the status of the transport request and ensure it is not locked or in an inconsistent state.
  
  
  
  Clear Transport Buffer: 
  
  If the buffer is full, you may need to clear it. This can be done using transaction SE09 or SE10 to manage transport requests.
  
  
  
  Check Authorizations: 
  
  Ensure that the user performing the transport has the necessary authorizations. You can check this in transaction SU53 after the error occurs.
  
  
  
  Review TMS Configuration: 
  
  Check the transport domain configuration using transaction STMS. Ensure that all systems are correctly configured and that there are no inconsistencies.
  
  
  
  Check System Logs: 
  
  Use transaction SM21 to review system logs for any related errors or warnings that could provide more context about the issue.
  
  
  
  Network Connectivity: 
  
  Ensure that there are no network issues between the systems involved in the transport. You can use tools like ping or traceroute to check connectivity.
  
  
  
  Consult SAP Notes: 
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Restart Transport Process: 
  
  If the issue persists, consider restarting the transport process or the SAP system itself, if feasible.
  
  
  
  Related Information:
  
  SAP Transport Management System (TMS): Understanding how TMS works and its components can help in troubleshooting transport-related issues.
  SAP Notes and Knowledge Base Articles: Regularly check for updates or patches that may address known issues related to transport errors.
  SAP Community: Engaging with the SAP Community can provide insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.