How To Fix RTCMMD140 - The main assignment of material & cannot be deleted manually

RTCMMD140 - Overview

• Message type: E = Error

• Message class: RTCMMD - Article Hierarchy

• Message number: 140

• Message text: The main assignment of material & cannot be deleted manually

What causes this issue?

You cannot delete the main assignment if the hierarchy has active status
and the multiple material assignment or mandatory assignment is
activated.
You can delete the main assignment if the hierarchy has planned status,
the main assignment to be deleted does not have any secondary
assignments and only has one date record.

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?

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 RTCMMD140 - The main assignment of material & cannot be deleted manually ?

  The SAP error message RTCMMD140, which states "The main assignment of material & cannot be deleted manually," typically occurs in the context of material master data management. This error indicates that you are trying to delete a main assignment for a material that is not allowed to be deleted manually due to certain constraints or settings in the system.
  
  Cause:
  
  Main Assignment Restrictions: The main assignment of a material (such as a main supplier, main plant, or main storage location) is often protected from manual deletion to maintain data integrity and consistency.
  Dependencies: There may be dependencies or relationships with other data objects (like purchase orders, stock levels, etc.) that prevent the deletion of the main assignment.
  Configuration Settings: The system configuration may have specific settings that restrict the deletion of main assignments for certain materials or material types.
  
  
  Solution:
  
  Check Dependencies: Review any existing dependencies related to the material. Ensure that there are no active