How To Fix CRD_MDA164 - An error has occurred while locking assignments

SAP Error Message - Details

• Message type: E = Error

• Message class: CRD_MDA - Messages for Master Data Administration - Credentialing

• Message number: 164

• Message text: An error has occurred while locking assignments

What causes this issue?

The system attempted to request a
<DS:GLOS.44AE7E27422C5061E10000000A1553FE>credential assignment</>.
However a serious error was reported by lock administration.

System Response

Processing is being canceled, to avoid inconsistencies.

How to fix this error?

Try to start the process again later. If the same error occurs again,
contact SAP support for an analysis and solution to the problem.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CRD_MDA164 - An error has occurred while locking assignments ?

  The SAP error message CRD_MDA164, which states "An error has occurred while locking assignments," typically occurs in the context of managing assignments in SAP systems, particularly in modules related to project management, resource management, or similar functionalities. This error can arise due to various reasons, and understanding the cause is essential for finding an appropriate solution.
  Possible Causes:
  
  Concurrency Issues: The error may occur if multiple users are trying to access or modify the same assignment simultaneously, leading to a locking conflict.
  Database Locking: The database may have a lock on the records that are being accessed, preventing the current transaction from proceeding.
  Authorization Issues: The user may not have the necessary permissions to lock the assignments, leading to an error when attempting to perform the action.
  System Configuration: There may be issues with the configuration of the SAP system that affect how locks are managed.
  Technical Issues: Bugs or glitches in the SAP system or the specific module being used can also lead to this error.
  
  Solutions:
  
  Check for Concurrent Users: Ensure that no other users are trying to access the same assignment at the same time. If possible, coordinate with other users to avoid conflicts.
  Release Locks: If you suspect that a lock is held on the database, you can use transaction codes like SM12 (to view and delete locks) to check for and release any unnecessary locks.
  Review Authorizations: Verify that the user has the necessary authorizations to perform the action. You may need to consult with your SAP security team to ensure proper access rights.
  System Configuration Review: Check the configuration settings related to locking mechanisms in your SAP system. This may require assistance from your SAP Basis or technical team.
  Check for Updates or Patches: Ensure that your SAP system is up to date with the latest patches and updates, as these may resolve known bugs that could be causing the error.
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message. SAP Notes often provide solutions or workarounds for known issues.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps) to help diagnose the issue.
  Documentation: Review SAP documentation related to the specific module you are working with, as it may provide insights into locking behavior and best practices.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the CRD_MDA164 error and implement a suitable solution.