How To Fix CPOC2657 - Table unlocked manually

SAP Error Message - Details

• Message type: E = Error

• Message class: CPOC2 - PP-PI-PMA: PI Sheet Messages, SCM Add-On

• Message number: 657

• Message text: Table unlocked manually

Self-Explanatory Message

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• What is the cause and solution for SAP error message CPOC2657 - Table unlocked manually ?

  The SAP error message CPOC2657, which states "Table unlocked manually," typically occurs in the context of SAP's Capacity Planning and Production Order Control (CPOC) module. This error indicates that a table that is required for a certain operation has been manually unlocked, which can disrupt the expected workflow or data integrity.
  Cause:
  
  Manual Unlocking: The most direct cause of this error is that a user or an administrator has manually unlocked a table that is supposed to remain locked during certain operations. This can happen during maintenance activities or troubleshooting.
  Concurrency Issues: If multiple users or processes are trying to access or modify the same data simultaneously, it may lead to manual unlocking of tables.
  System Configuration: Incorrect configuration settings in the SAP system can lead to unexpected behavior regarding table locks.
  
  Solution:
  
  Check Lock Status: Use transaction code SM12 to check the lock entries for the relevant tables. Identify if the table is indeed unlocked and by whom.
  Re-lock the Table: If the table should be locked for the operation you are trying to perform, you may need to re-lock it. This can often be done by restarting the relevant transaction or process.
  Review User Actions: Investigate who manually unlocked the table and why. If it was done in error, communicate with the user to prevent future occurrences.
  System Configuration Review: Ensure that the system configuration is set up correctly to manage table locks as intended. This may involve reviewing settings related to concurrency control.
  Consult Documentation: Refer to SAP documentation or support notes related to the specific module you are working with for any additional guidance or known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SM21 (system log), and ST22 (dump analysis) to diagnose issues further.
  SAP Notes: Check SAP Notes for any patches or updates that may address this specific error or related locking issues.
  User Training: Ensure that users are trained on the implications of manually unlocking tables and the potential impact on system operations.
  
  If the issue persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.