How To Fix PSSC_BUFFER201 - Enqueue: Internal error from enqueue server

SAP Error Message - Details

• Message type: E = Error

• Message class: PSSC_BUFFER - Social Services Buffer

• Message number: 201

• Message text: Enqueue: Internal error from enqueue server

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message PSSC_BUFFER201 - Enqueue: Internal error from enqueue server ?

  The SAP error message PSSC_BUFFER201 indicates an internal error from the enqueue server, which is responsible for managing locks in the SAP system. This error typically arises when there is an issue with the enqueue server's ability to handle requests, which can be caused by various factors.
  Causes:
  
  System Resource Issues: Insufficient memory or CPU resources on the enqueue server can lead to this error.
  Network Problems: Connectivity issues between the application server and the enqueue server can cause communication failures.
  Configuration Errors: Incorrect configuration settings in the SAP system can lead to enqueue server errors.
  Database Issues: Problems with the underlying database, such as locks or deadlocks, can also trigger this error.
  Software Bugs: There may be bugs in the SAP kernel or enqueue server that lead to this error.
  
  Solutions:
  
  Check System Resources: Monitor the system resources (CPU, memory, disk space) on the enqueue server. If resources are low, consider increasing them or optimizing the workload.
  Review Network Connectivity: Ensure that there are no network issues between the application server and the enqueue server. Check for any firewalls or network configurations that might be blocking communication.
  Check Configuration Settings: Review the configuration settings for the enqueue server in the SAP system. Ensure that they are set correctly according to SAP best practices.
  Restart Enqueue Server: Sometimes, simply restarting the enqueue server can resolve transient issues. This can be done through the SAP Management Console (SAP MC) or by using transaction codes like SM51.
  Check for Database Locks: Use database tools to check for any locks or deadlocks that might be affecting the enqueue server's performance.
  Update SAP Kernel: If the issue persists, check for any available updates or patches for the SAP kernel that might address known bugs related to the enqueue server.
  Consult SAP Notes: Search the SAP Support Portal for any relevant SAP Notes that might provide additional guidance or solutions for this specific error.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SM12 (to check locks), SM21 (to check system logs), and SM37 (to check job logs) for troubleshooting.
  SAP Support: If the issue cannot be resolved with the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed logs and error messages to facilitate troubleshooting.
  Documentation: Refer to the official SAP documentation for more information on enqueue server operations and best practices.
  
  By following these steps, you should be able to diagnose and resolve the PSSC_BUFFER201 error effectively.