How To Fix F2188 - Partner function & already exists (only defined once)

F2188 - Overview

• Message type: E = Error

• Message class: F2 - Master Data Maintenance: Customer, Vendor

• Message number: 188

• Message text: Partner function & already exists (only defined once)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message F2188 - Partner function & already exists (only defined once) ?

  The SAP error message F2188 ("Partner function & already exists (only defined once)") typically occurs in the context of partner functions in SAP, particularly when dealing with business partner roles in transactions such as sales orders, purchase orders, or other documents that involve partner functions.
  
  Cause:
  This error indicates that you are trying to assign a partner function (like Sold-to Party, Ship-to Party, etc.) that has already been assigned to a business partner in the current context. Each partner function can only be assigned once to a specific business partner in a given transaction. 
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Partner Functions:
  
  Review the partner functions already assigned to the business partner in the transaction. You can do this by navigating to the relevant document (e.g., sales order, purchase order) and checking the partner tab or section.
  
  
  
  Remove Duplicate Assignment:
  
  If you find that the partner function is already assigned,