How To Fix MDG_BS_ECC_SUPPLIER029 - Vendor &1 is already assigned to business partner &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_BS_ECC_SUPPLIER - Master Data Processes ECC Supplier

• Message number: 029

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

What causes this issue?

The vendor &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 SUPPLIER change the corresponding supplier 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_SUPPLIER029 - Vendor &1 is already assigned to business partner &2 ?

  The SAP error message MDG_BS_ECC_SUPPLIER029 indicates that a vendor (supplier) is already assigned to a business partner in the system. This typically occurs in the context of SAP Master Data Governance (MDG) when trying to create or modify a vendor that is already linked to an existing business partner.
  Cause:
  The error arises when:
  
  You attempt to create a new vendor or modify an existing vendor in the MDG system, but the vendor number you are using is already associated with another business partner.
  There is a duplicate entry in the system where the same vendor is linked to multiple business partners, which is not allowed.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Use transaction codes like BP (Business Partner) or MK03 (Display Vendor) to check the existing assignments of the vendor and business partner.
  Verify if the vendor is indeed assigned to another business partner.
  
  
  
  Identify Duplicates:
  
  If you find that the vendor is assigned to multiple business partners, you need to determine which assignment is correct and which one should be removed or modified.
  
  
  
  Modify or Delete Assignments:
  
  If the vendor should only be linked to one business partner, you may need to delete the incorrect assignment or modify it to ensure that the vendor is only associated with the intended business partner.
  
  
  
  Create a New Vendor:
  
  If the vendor is correctly assigned to another business partner and you need a new vendor, consider creating a new vendor with a different vendor number.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team for specific guidelines on handling vendor and business partner assignments in your organization.
  
  
  
  Check Configuration:
  
  Ensure that the configuration settings in your MDG system allow for the correct handling of vendor and business partner relationships.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as BP, MK01 (Create Vendor), MK02 (Change Vendor), and MK03 (Display Vendor).
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  Master Data Governance: Understand the principles of Master Data Governance in SAP, especially how it manages relationships between business partners and vendors.
  
  By following these steps, you should be able to resolve the error and ensure that your vendor and business partner assignments are correctly configured in the SAP system.