How To Fix W_DSD_01015 - Main supplier for store &1, material &2 could not be changed due to lock

SAP Error Message - Details

• Message type: E = Error

• Message class: W_DSD_01 - Global message class for DSD

• Message number: 015

• Message text: Main supplier for store &1, material &2 could not be changed due to lock

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W_DSD_01015 - Main supplier for store &1, material &2 could not be changed due to lock ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W_DSD_01015
  
  Text: Main supplier for store &1, material &2 could not be changed due to lock.
  
  Cause:
  This warning message occurs when you try to change the main supplier for a material in a particular store, but the system cannot complete the change because the relevant data record is currently locked by another user or process.
  In SAP, data records are locked to prevent simultaneous conflicting changes. The lock ensures data consistency and integrity. If another user or background job is currently editing or processing the same material and store combination, the system will not allow you to make changes until the lock is released.
  
  Explanation:
  
  Store &1: The store or plant where the material is managed.
  Material &2: The material number for which the main supplier is being changed.
  The lock is typically a database lock or enqueue lock on the material master or purchasing info record.
  
  
  Common Scenarios Leading to This Error:
  
  Another user is editing the material master or purchasing info record.
  A background job or batch process is updating the material or supplier data.
  A transaction that updates the same data is running and has not yet committed or rolled back.
  Lock entries were not properly released due to system errors or aborted transactions.
  
  
  Solution:
  
  
  Check for Locks:
  
  Use transaction SM12 (Lock Entries) to check if there are any locks on the material or store.
  Enter the material number or relevant key fields to find the lock entries.
  
  
  
  Identify the User or Process Holding the Lock:
  
  In SM12, identify the user or process holding the lock.
  Contact the user to finish or cancel their transaction if possible.
  
  
  
  Wait or Cancel the Lock:
  
  If the lock is held by a background job, wait for it to complete.
  If the lock is stale (e.g., due to a crashed session), you may need to delete the lock entry manually in SM12 (only do this if you are sure it is safe).
  
  
  
  Retry the Change:
  
  After the lock is released, retry changing the main supplier.
  
  
  
  Check for Batch Jobs or Interfaces:
  
  Sometimes interfaces or batch jobs update material master or purchasing data. Coordinate with the basis or functional team to schedule changes when no batch jobs are running.
  
  
  
  
  Additional Information:
  
  This message is a warning (W_), so the system prevents the change to avoid data inconsistency.
  Locks are managed by the SAP enqueue server.
  Frequent locking issues may indicate performance problems or long-running transactions.
  If locks are frequent and blocking business processes, investigate the root cause of long locks or optimize the processes.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Attempt to change main supplier blocked due to existing lock on material/store data.
  
  
  Solution
  Check and release locks via SM12, coordinate with users or batch jobs, then retry.
  
  
  Transaction
  SM12 (to check and delete locks)
  
  
  Related Notes
  Ensure no long-running transactions or batch jobs hold locks unnecessarily.
  
  
  
  
  If you need further help, please provide the transaction code you are using or the context in which the error occurs.