How To Fix MDC_ADAPTER027 - BAS Matching locked by Process &1

SAP Error Message - Details

• Message type: E = Error

• Message class: MDC_ADAPTER - Messages for generic adapter implementations

• Message number: 027

• Message text: BAS Matching locked by Process &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDC_ADAPTER027 - BAS Matching locked by Process &1 ?

  The SAP error message MDC_ADAPTER027 indicates that a matching process in the SAP system is locked by another process. This typically occurs in the context of Master Data Consolidation (MDC) or similar processes where data matching is performed, and it can prevent other processes from accessing the data until the lock is released.
  Cause:
  
  Concurrent Processes: The error usually arises when multiple processes are trying to access the same data for matching at the same time. One process may have locked the data for processing, preventing others from accessing it.
  Long-Running Processes: If a matching process is taking longer than expected, it can hold the lock for an extended period, leading to this error for subsequent processes.
  System Configuration: There may be configuration settings that affect how locks are managed in the system.
  
  Solution:
  
  Identify the Locking Process: Use transaction codes like SM12 (for lock entries) to identify which process is holding the lock. You can check the user and the transaction that is causing the lock.
  Wait for Completion: If the locking process is legitimate and expected to complete soon, you may need to wait for it to finish.
  Terminate the Locking Process: If the locking process is stuck or taking too long, you may need to terminate it. This can be done through transaction SM37 (for job monitoring) or SM12 (to delete the lock entry).
  Review Process Design: If this issue occurs frequently, consider reviewing the design of your matching processes to minimize locking conflicts. This may involve optimizing the processes or scheduling them to run at different times.
  Increase System Resources: If the issue is related to performance, consider increasing system resources or optimizing the database to handle concurrent processes better.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage lock entries), SM37 (to monitor background jobs), and SM21 (to check system logs).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for managing locks in your environment.
  Documentation: Review SAP documentation related to Master Data Consolidation and locking mechanisms to understand how to configure and manage these processes effectively.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.