How To Fix USMD1A220 - Key &2 for &1 is already blocked in change request &4

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1A - Messages: Abstraction Layer

• Message number: 220

• Message text: Key &2 for &1 is already blocked in change request &4

What causes this issue?

Key &V2& was already marked for creation in change request &V4&.

System Response

The system resets the key to &V3&.

How to fix this error?

Choose a different key.

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 USMD1A220 - Key &2 for &1 is already blocked in change request &4 ?

  The SAP error message USMD1A220 indicates that a specific key (denoted as &2) for a particular object (denoted as &1) is already blocked in a change request (denoted as &4). This typically occurs in the context of SAP Master Data Governance (MDG) when multiple users or processes attempt to modify the same data object simultaneously.
  Cause:
  
  Concurrent Access: Another user or process is currently editing or has locked the object in a change request.
  Change Request Locking: The system uses locking mechanisms to prevent data inconsistencies. If a change request is already in progress for the specified key, the system will block further changes until the current request is completed or released.
  Long-running Transactions: If a transaction takes too long to complete, it may lead to locks being held longer than expected.
  
  Solution:
  
  
  Check Active Change Requests: Identify if there are any active change requests that are currently blocking the key. You can do this by checking the change request logs or using transaction codes like SE03 (Transport Organizer Tools) or SE01 (Transport Organizer).
  
  
  Release or Complete the Change Request: If you have access, you can either complete or release the change request that is blocking the key. This will free up the object for editing.
  
  
  Wait and Retry: If the blocking change request is being processed by another user, you may need to wait until they complete their changes and release the lock.
  
  
  Contact the User: If you know who is working on the change request, you can reach out to them to see if they can expedite their process.
  
  
  System Administration: If the issue persists and you cannot identify the blocking request, you may need to involve your SAP Basis or system administration team to investigate further. They can check for any locks in the database and release them if necessary.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view and manage locks) and SM21 (to check system logs) for troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates their knowledge base with solutions for common problems.
  User Documentation: Review the user documentation for SAP MDG to understand how change requests and locking mechanisms work.
  
  By following these steps, you should be able to resolve the error and continue with your work in SAP.