How To Fix MM648 - The material cannot be locked when you create it with a reference

MM648 - Overview

• Message type: E = Error

• Message class: MM - Messages for material master maintenance and Customizing

• Message number: 648

• Message text: The material cannot be locked when you create it with a reference

What causes this issue?

You are creating a material using a reference material, and want to
lock the material you are creating. This is not possible.

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?

Finish creating the material and save it.
Access the transaction <LS>Change Material</> and lock the material
there.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MM648 - The material cannot be locked when you create it with a reference ?

  The SAP error message MM648 ("The material cannot be locked when you create it with a reference") typically occurs when you are trying to create a new material using an existing material as a reference, but the system is unable to lock the reference material for some reason. This can happen due to various reasons, including:
  Causes:
  
  Material Locking: The reference material might be locked by another user or process. This can happen if someone else is currently editing the material or if there is a background job that is processing the material.
  Authorization Issues: The user may not have the necessary authorizations to access or lock the reference material.
  System Configuration: There may be configuration settings in the SAP system that prevent locking of materials under certain conditions.
  Database Issues: There could be database-related issues that are preventing the locking mechanism from functioning properly.
  
  Solutions:
  
  Check Material Lock: Verify if the reference material is currently being