How To Fix MDG_BS_ECC_CUSTOMER027 - Customer &1 is already assigned to business partner &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_BS_ECC_CUSTOMER - Messages for Customer

• Message number: 027

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

What causes this issue?

The customer &v1& is already used and assigned to another business
partner than the currently processed.

System Response

The currently processed incorrect business partner is set to the
post-processing office (forward error handling) for correction.

How to fix this error?

In the post-processing office
<DS:TRAS./SAPPO/PPO2>/SAPPO/PPO2</> open the incorrect business partner
and process it.
Under the node CUSTOMER change the corresponding customer receiver ID
and save.
Restart the process.

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 MDG_BS_ECC_CUSTOMER027 - Customer &1 is already assigned to business partner &2 ?

  The SAP error message MDG_BS_ECC_CUSTOMER027 indicates that a customer (identified by &1) is already assigned to a business partner (identified by &2). This error typically occurs in the context of Master Data Governance (MDG) when trying to create or modify a business partner that is already linked to an existing customer record.
  Cause:
  
  Duplicate Assignment: The primary cause of this error is that the customer number you are trying to assign to a business partner is already associated with another business partner in the system.
  Data Integrity Rules: SAP enforces data integrity rules to prevent duplicate assignments of customers to business partners, which can lead to inconsistencies in data management.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Use transaction codes like BP (Business Partner) or SE16N (Data Browser) to check the existing assignments of the customer and business partner.
  Verify if the customer number is already linked to another business partner.
  
  
  
  Modify Existing Assignment:
  
  If the customer is indeed assigned to another business partner and you need to change this, you may need to remove the existing assignment before assigning it to the new business partner.
  This can be done by navigating to the business partner in the BP transaction and removing the customer assignment.
  
  
  
  Use a Different Customer Number:
  
  If the customer number is already in use and cannot be removed, consider using a different customer number for the new business partner.
  
  
  
  Consult with Data Governance Team:
  
  If you are unsure about the implications of changing assignments or if the data is critical, consult with your data governance or master data management team for guidance.
  
  
  
  Check for Custom Logic:
  
  If your organization has implemented custom logic or enhancements in the MDG process, ensure that these are not causing the issue. Review any custom code or configurations that might affect business partner and customer assignments.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as BP, MDG, and SE16N for data checks and modifications.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation on Master Data Governance and Business Partner management for best practices and guidelines on managing customer and business partner relationships.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.