How To Fix MAHD004 - Lock on table MAHD(-OVAL) could not be set for plant &1

MAHD004 - Overview

• Message type: E = Error

• Message class: MAHD - Messages for Alternative Historical Data

• Message number: 004

• Message text: Lock on table MAHD(-OVAL) could not be set for plant &1

What causes this issue?

The system could not lock tables MAHD or MAHD_OVAL.
This could be because a process is currently running or because a user
is currently processing a requested record.

System Response

<DS:GLOS.70086ED0D946154EBC7C6B32697A9C30>Alternative historical data
</>(AHD) could not be loaded for the entire MRP area.

How to fix this error?

Release all records for the requested MRP area that are currently locked
and restart the program.

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 MAHD004 - Lock on table MAHD(-OVAL) could not be set for plant &1 ?

  The SAP error message MAHD004 indicates that there is a lock issue on the table MAHD (which is related to the Material Master data) for a specific plant. This error typically occurs when multiple users or processes are trying to access or modify the same data simultaneously, leading to a conflict in locking mechanisms.
  
  Cause:
  
  Concurrent Access: Multiple users or processes are trying to access or modify the same material data at the same time.
  Long-running Transactions: A transaction that takes too long to complete may hold a lock on the table, preventing others from accessing it.
  System Performance Issues: If the system is under heavy load, it may not be able to manage locks effectively.
  Database Issues: Problems with the underlying database can also lead to locking issues.
  
  
  Solution:
  
  Wait and Retry: Often, simply waiting for a few moments and then retrying the operation can resolve the issue, especially if it was caused by a temporary