How To Fix MDG_BS_BP_MLT_AS026 - Customer &1 is already assigned to partner &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_BS_BP_MLT_AS - Messages for multiple assignment function

• Message number: 026

• Message text: Customer &1 is already assigned to partner &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_BS_BP_MLT_AS026 - Customer &1 is already assigned to partner &2 ?

  The SAP error message MDG_BS_BP_MLT_AS026 indicates that a customer (business partner) is already assigned to another partner in the system. This typically occurs in the context of Master Data Governance (MDG) for Business Partners when there is an attempt to create or modify a business partner relationship that conflicts with existing assignments.
  Cause:
  
  Duplicate Assignment: The customer you are trying to assign is already linked to another partner. This can happen if the same customer is being used in multiple contexts or if there are existing relationships that have not been properly managed.
  Data Integrity Rules: SAP MDG enforces data integrity rules to prevent duplicate or conflicting assignments, which is a common practice to maintain clean and accurate master data.
  Configuration Issues: There may be configuration settings in the MDG system that dictate how business partners can be assigned to one another, leading to this error if the rules are not followed.
  
  Solution:
  
  Check Existing Assignments: Review the existing assignments for the customer and partner in question. You can do this by navigating to the relevant business partner data in the MDG application and checking the relationships.
  Remove or Modify Existing Relationships: If the customer is indeed assigned to another partner and this assignment is no longer valid, you may need to remove or modify that relationship before proceeding with the new assignment.
  Use Different Customer/Partner: If the assignment is valid and necessary, consider using a different customer or partner that does not conflict with existing assignments.
  Consult with Data Governance Team: If you are unsure about the relationships or the implications of changing them, consult with your organization's data governance team or the team responsible for managing business partner data.
  Review Configuration: If you believe this error is occurring incorrectly, review the configuration settings in the MDG system to ensure they align with your business processes.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like BP (Business Partner) to view and manage business partner data.
  MDG Configuration: Understanding the configuration settings in MDG related to business partner relationships can help prevent similar issues in the future.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates regarding this error message.
  User Authorization: Ensure that you have the necessary authorizations to make changes to business partner assignments, as lack of permissions can also lead to errors.
  
  By following these steps, you should be able to resolve the error and manage your business partner assignments effectively.