How To Fix APPLG005 - DC: Master cannot be assigned to DC; DC already has a master

APPLG005 - Overview

• Message type: E = Error

• Message class: APPLG - Application Graphics Messages (Graphic Proxy Framework)

• Message number: 005

• Message text: DC: Master cannot be assigned to DC; DC already has a master

What causes this issue?

An attempt was made to give a data container a second master.

How to fix this error?

Check the call method.
The master is the application that creates the data container.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message APPLG005 - DC: Master cannot be assigned to DC; DC already has a master ?

  The SAP error message APPLG005 indicates that there is an issue with the assignment of a master data object (like a material or a vendor) to a distribution center (DC) because the DC already has a master assigned to it. This typically occurs in the context of logistics or supply chain management within SAP, particularly when dealing with master data assignments.
  
  Cause:
  
  Existing Assignment: The primary cause of this error is that the distribution center (DC) you are trying to assign a master to already has another master assigned to it. In SAP, each DC can only have one master assigned at a time for certain types of master data.
  Data Integrity Rules: SAP enforces data integrity rules to prevent conflicts and ensure that each DC is uniquely associated with a master data object.
  
  
  Solution:
  To resolve the APPLG005 error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Go to the relevant transaction (e.g., MM02 for