How To Fix 8B677 - You cannot use partner &1 as a reference; partner functions identical

8B677 - Overview

• Message type: E = Error

• Message class: 8B - Localization (Brazil)

• Message number: 677

• Message text: You cannot use partner &1 as a reference; partner functions identical

What causes this issue?

The reference partner (&v1&) has the same partner function (&v3&) as
the new partner (&v2&).

System Response

The system does not copy the partner.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

8B677 - Details

• The SAP error message 8B677 indicates that there is an issue with partner functions in a business transaction. Specifically, the error states: "You cannot use partner &1 as a reference; partner functions identical." This typically occurs when you are trying to reference a partner (like a vendor, customer, or other business partner) that has the same partner function as another partner in the transaction, which is not allowed.
  
  Cause:
  
  Duplicate Partner Functions: The error arises when you attempt to assign a partner that has the same partner function as another partner already assigned in the transaction. For example, if you have two partners both designated as "Sold-to Party," the system will not allow you to reference one as a partner for the other.
  
  Configuration Issues: There may be configuration settings in the partner determination procedure that are causing this conflict.
  Data Entry Errors: Incorrect data entry or selection of partners during transaction processing can