How To Fix WN464 - Existing BP &1 with customer &2 will be assigned; maintain supplier

SAP Error Message - Details

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 464

• Message text: Existing BP &1 with customer &2 will be assigned; maintain supplier

What causes this issue?

You are creating a plant and need to assign a business partner to the
plant.
The business partner you want to assign has the required customer, but
currently no supplier assigned.

System Response

It is not possible to assign a business partner without a supplier to a
plant if the plant profile of the plant requires a supplier.

How to fix this error?

Use the business partner maintenance to extend the business partner by a
supplier.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WN464 - Existing BP &1 with customer &2 will be assigned; maintain supplier ?

  The SAP error message WN464 indicates that there is an issue with the Business Partner (BP) assignment in the system, specifically related to the customer and supplier roles. This error typically arises when you are trying to create or maintain a Business Partner that is already linked to an existing customer but does not have a corresponding supplier assignment.
  Cause:
  
  Existing Business Partner: The Business Partner (BP) already exists in the system with a customer role assigned to it.
  Missing Supplier Role: The same Business Partner does not have a supplier role assigned, which is required for the operation you are trying to perform.
  Data Inconsistency: There may be inconsistencies in the data where the system expects a supplier role to be present for the existing customer.
  
  Solution:
  To resolve the WN464 error, you can follow these steps:
  
  
  Check Existing Business Partner:
  
  Go to the Business Partner transaction (BP) in SAP.
  Search for the Business Partner ID mentioned in the error message.
  Verify if the Business Partner has a customer role assigned.
  
  
  
  Assign Supplier Role:
  
  If the Business Partner is already a customer, you need to assign the supplier role to the same Business Partner.
  In the Business Partner maintenance screen, switch to the "Roles" tab.
  Add the supplier role (e.g., "FLCU00" for customer, "FLVN00" for supplier) to the Business Partner.
  
  
  
  Save Changes:
  
  After assigning the supplier role, save the changes.
  Retry the operation that triggered the error.
  
  
  
  Data Consistency Check:
  
  Ensure that there are no other inconsistencies in the Business Partner data that could lead to similar errors.
  
  
  
  Related Information:
  
  Business Partner Roles: In SAP, a Business Partner can have multiple roles (e.g., customer, supplier, etc.). Each role has specific data requirements and functionalities.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as BP (Business Partner), and possibly others like XK01 (Create Vendor) or XD01 (Create Customer) depending on your specific needs.
  Authorization: Ensure that you have the necessary authorizations to make changes to Business Partner data.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates related to this error.
  
  By following these steps, you should be able to resolve the WN464 error and successfully maintain the Business Partner in SAP.