How To Fix PSSC_BUFFER202 - Enqueue: Use either single or multiple Enqueue/Dequeue

SAP Error Message - Details

• Message type: E = Error

• Message class: PSSC_BUFFER - Social Services Buffer

• Message number: 202

• Message text: Enqueue: Use either single or multiple Enqueue/Dequeue

What causes this issue?

Both parameters IV_OBJECT and IT_OBJECTS are filled. You must only fill
one of them.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Fill either IV_OBJECT or IT_OBJECTS, but not both.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PSSC_BUFFER202 - Enqueue: Use either single or multiple Enqueue/Dequeue ?

  The SAP error message PSSC_BUFFER202 typically occurs in the context of enqueue and dequeue operations in SAP systems, particularly when dealing with buffer management in the SAP application server. This error indicates that there is a conflict in the way enqueue or dequeue operations are being handled, specifically that the system is expecting either a single enqueue/dequeue operation or multiple ones, but not both at the same time.
  Cause:
  The error can arise due to several reasons:
  
  Incorrect Function Module Usage: The function modules for enqueue and dequeue may not be used correctly. For example, if a program tries to enqueue multiple objects in a single call when the system expects them to be handled individually, this error can occur.
  Concurrency Issues: If multiple processes are trying to enqueue or dequeue the same object simultaneously, it can lead to conflicts.
  Configuration Issues: There may be configuration settings in the SAP system that are not aligned with the expected behavior of enqueue/dequeue operations.
  
  Solution:
  To resolve the PSSC_BUFFER202 error, consider the following steps:
  
  
  Review Code: Check the ABAP code where the enqueue and dequeue operations are being performed. Ensure that you are using the correct function modules (ENQUEUE_<object> and DEQUEUE_<object>) and that they are being called appropriately.
  
  If you are using a single enqueue/dequeue operation, ensure that you are not trying to enqueue multiple objects in a single call.
  If you are using multiple enqueue/dequeue operations, ensure that they are being handled in a way that does not conflict with the system's expectations.
  
  
  
  Check for Concurrency: Investigate if there are multiple processes trying to access the same resource. Implement proper locking mechanisms to avoid conflicts.
  
  
  Test in Development: If you have made changes to the code, test it in a development environment to ensure that the error does not occur again.
  
  
  Consult Documentation: Refer to SAP documentation or the function module documentation for specific details on how to use enqueue and dequeue operations correctly.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  
  Debugging: If the issue persists, consider using the SAP debugger to step through the enqueue/dequeue logic to identify where the conflict is occurring.
  
  
  Related Information:
  
  Enqueue/Dequeue Mechanism: This is a locking mechanism used in SAP to prevent data inconsistencies when multiple users or processes try to access the same data simultaneously.
  Function Modules: Familiarize yourself with the specific function modules used for enqueueing and dequeueing objects in SAP, as they are critical for managing locks.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the PSSC_BUFFER202 error and implement a solution to resolve it.