How To Fix WW066 - MG reference material & is already being edited

WW066 - Overview

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 066

• Message text: MG reference material & is already being edited

What causes this issue?

The reference material for this material group is currently being
edited.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

INCLUDE ISR_WIEDERHOLEN

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WW066 - MG reference material & is already being edited ?

  The SAP error message WW066 indicates that a material (in this case, a reference material) is currently being edited by another user or session. This can occur in various scenarios, such as when multiple users are trying to access or modify the same material simultaneously.
  
  Cause:
  
  Concurrent Access: Another user is currently editing the material, which locks it for other users.
  Session Lock: The material may be locked due to an open session that has not been properly closed.
  Background Jobs: A background job might be processing the material, causing it to be locked.
  
  
  Solution:
  
  Wait and Retry: If another user is editing the material, you may need to wait until they finish and release the lock. You can try again after some time.
  Check Lock Entries: Use transaction code SM12 to check for lock entries. You can see which user or session is holding the lock on the material. If necessary, you can delete the lock