How To Fix MDC_MODEL063 - Matching could not be completed due to active records being locked

SAP Error Message - Details

• Message type: E = Error

• Message class: MDC_MODEL - Messages In Context Of MDC Model

• Message number: 063

• Message text: Matching could not be completed due to active records being locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDC_MODEL063 - Matching could not be completed due to active records being locked ?

  The SAP error message MDC_MODEL063 indicates that a matching process could not be completed because there are active records that are locked. This typically occurs in the context of data modeling or master data management within SAP systems, particularly when working with the SAP S/4HANA system or SAP BW.
  Cause:
  
  
  Locked Records: The primary cause of this error is that certain records in the database are locked by another user or process. This can happen if:
  
  Another user is currently editing or processing the same records.
  A transaction is still open and has not been completed, causing the records to remain locked.
  A background job or batch process is running that has not yet released the locks.
  
  
  
  Database Locking Mechanism: SAP uses a locking mechanism to ensure data integrity. When a record is being modified, it is locked to prevent other transactions from accessing it until the first transaction is completed.
  
  
  Solution:
  To resolve the MDC_MODEL063 error, you can take the following steps:
  
  
  Identify Locked Records:
  
  Use transaction code SM12 to view and analyze the locked entries. This transaction allows you to see which users or processes are holding locks on specific records.
  
  
  
  Release Locks:
  
  If you identify that a lock is held by a user who is no longer working on the record, you can manually release the lock from the SM12 transaction. However, be cautious when doing this, as it may lead to data inconsistencies if the user is still working on the record.
  
  
  
  Check for Active Sessions:
  
  Ensure that there are no active sessions or transactions that are holding locks on the records you are trying to match. If necessary, communicate with the users involved to coordinate the release of locks.
  
  
  
  Retry the Operation:
  
  After ensuring that the records are no longer locked, retry the matching operation that triggered the error.
  
  
  
  Review Background Jobs:
  
  If a background job is causing the locks, check the job status in transaction SM37. If the job is stuck or taking too long, you may need to investigate further or terminate the job if appropriate.
  
  
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks is crucial. Familiarize yourself with the locking mechanisms and how to manage them effectively.
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM37: Monitor background jobs.
  SE11: Data dictionary to check table structures and relationships.
  
  
  User Communication: If multiple users are working on the same data, establish a protocol for data access to minimize locking issues.
  Performance Monitoring: Regularly monitor system performance and locking situations to prevent future occurrences of this error.
  
  By following these steps, you should be able to resolve the MDC_MODEL063 error and continue with your data matching process in SAP.