How To Fix WN477 - Referenced customer in supplier master will be overwritten

WN477 - Overview

• Message type: E = Error

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

• Message number: 477

• Message text: Referenced customer in supplier master will be overwritten

What causes this issue?

You are creating a plant creation and need to assign an existing
business partner.
The supplier of the business partner you want to assign has a reference
to a customer maintained in the supplier master data. This customer is
different to the customer of the plant that you want to create now.

System Response

The assignment of the business partner to the new plant overwrites the
current reference.

How to fix this error?

Check whether the existing business partner should be assigned to the
new plant.

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 WN477 - Referenced customer in supplier master will be overwritten ?

  The SAP error message WN477 ("Referenced customer in supplier master will be overwritten") typically occurs when there is a conflict between the customer and supplier data in the system. This error is often encountered when you are trying to create or modify a vendor (supplier) master record that is linked to a customer master record.
  
  Cause:
  The error arises when:
  
  A vendor master record is being created or updated, and it references a customer master record that already exists.
  The system detects that the customer data associated with the vendor is different from what is currently stored in the vendor master record.
  The system is set to overwrite the existing customer data with the new data from the vendor master record, which can lead to inconsistencies.
  
  
  Solution:
  To resolve the WN477 error, you can take the following steps:
  
  
  Check the Vendor and Customer Records:
  
  Review the vendor master record and the associated customer master record to ensure that the