How To Fix QP550 - Discrepancy between memory and memory management of operation data

SAP Error Message - Details

• Message type: E = Error

• Message class: QP - Message IDs for function module group QPAA

• Message number: 550

• Message text: Discrepancy between memory and memory management of operation data

What causes this issue?

The system has detected a discrepancy between the internal memory
management of the SAPLQPAP program and the SAP memory.

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?

Generate a hard copy (printout) of the screen and notify the system
administrator of the problem.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QP550 - Discrepancy between memory and memory management of operation data ?

  The SAP error message QP550, which indicates a "Discrepancy between memory and memory management of operation data," typically arises in the context of Quality Management (QM) within SAP. This error suggests that there is an inconsistency between the data stored in memory and the data that the system expects to manage.
  Causes:
  
  
  Data Inconsistency: The most common cause is a mismatch between the data in the database and what is currently loaded in memory. This can happen due to various reasons, such as:
  
  System crashes or unexpected shutdowns.
  Incomplete or failed data updates.
  Issues during data migration or system upgrades.
  
  
  
  Buffer Issues: Sometimes, the SAP buffer may not be synchronized with the database, leading to discrepancies.
  
  
  Configuration Errors: Incorrect configuration settings in the Quality Management module can also lead to this error.
  
  
  Custom Code: If there are custom enhancements or modifications in the QM module, they might not be handling data correctly, leading to inconsistencies.
  
  
  Solutions:
  
  
  Refresh Buffer: You can try refreshing the buffer to ensure that the data in memory is consistent with the database. This can be done using transaction code SM12 to check for locks and SM21 to review system logs.
  
  
  Check for Updates: Ensure that all relevant updates and patches for your SAP system are applied. Sometimes, SAP releases notes or patches that address specific issues.
  
  
  Data Consistency Check: Run consistency checks on the QM data. You can use transaction codes like QCC1 (for quality inspection) to check for inconsistencies.
  
  
  Reprocess Data: If the error is related to specific operations or data entries, you may need to reprocess or correct those entries manually.
  
  
  Review Custom Code: If there are custom developments, review the code to ensure it adheres to SAP standards and does not introduce inconsistencies.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. SAP Notes often provide detailed instructions for resolving known issues.
  
  
  Contact SAP Support: If the issue persists after trying the above solutions, it may be necessary to contact SAP Support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SE37 (Function Module) for debugging and analyzing the issue.
  System Logs: Review system logs for any additional error messages or warnings that could provide more context about the issue.
  User Forums: Consider checking SAP community forums or user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the QP550 error in your SAP system.