How To Fix WS129 - Partner function missing for determining partner data

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 129

• Message text: Partner function missing for determining partner data

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 WS129 - Partner function missing for determining partner data ?

  Certainly! Here's a detailed explanation of the SAP error message WS129 - Partner function missing for determining partner data:
  
  Error Message
  WS129: Partner function missing for determining partner data
  
  Cause
  This error occurs when the system tries to determine partner data (such as customer, vendor, contact person, etc.) during a business transaction (e.g., sales order, delivery, billing, or service processing), but the required partner function is not maintained or assigned in the relevant master data or customizing.
  In other words, the system expects a partner function (like Sold-to party, Ship-to party, Payer, Bill-to party) to be defined for the business transaction or document, but it cannot find it. This can happen due to:
  
  Missing partner function assignment in the customer master or vendor master.
  Missing partner determination procedure in the transaction type or document type.
  Incorrect or incomplete partner determination configuration in customizing.
  Partner function not maintained in the sales document or business partner role.
  Custom code or user exit expecting a partner function that is not provided.
  
  
  When does it typically occur?
  
  During sales order creation or processing.
  During delivery or billing document creation.
  When partner determination is triggered but partner function data is incomplete.
  In service management or CRM scenarios where partner functions are mandatory.
  
  
  Solution
  
  
  Check Partner Determination Procedure:
  
  Go to SPRO ? Logistics Execution ? Shipping ? Basic Shipping Functions ? Partner Determination ? Define Partner Determination Procedures.
  Verify that the partner determination procedure assigned to the transaction type or document type includes the required partner functions.
  
  
  
  Maintain Partner Functions in Master Data:
  
  For customers: Use transaction XD02 (Change Customer) or VD02 (Change Sales Area Data) to check if the required partner functions (Sold-to, Ship-to, Payer, Bill-to) are maintained.
  For vendors: Use XK02 or MK02 to check partner functions if relevant.
  
  
  
  Assign Partner Functions in Sales Document:
  
  When creating or changing sales documents (e.g., VA01, VA02), ensure that the partner functions are correctly entered.
  If missing, add the required partner functions manually or check partner determination settings.
  
  
  
  Check Customizing for Partner Determination:
  
  Verify that the partner determination procedure is correctly assigned to the sales document type or transaction type.
  Check the partner function determination rules and partner schemas.
  
  
  
  Review User Exits or Enhancements:
  
  If custom code is involved, check if it expects a partner function that is not provided.
  Adjust the code or ensure the partner function is passed correctly.
  
  
  
  Recreate or Update Partner Data:
  
  Sometimes, partner data might be corrupted or incomplete. Recreate or update the partner data in master records.
  
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  VA01 - Create Sales Order
  VA02 - Change Sales Order
  XD02 - Change Customer Master
  SPRO - Customizing Implementation Guide
  
  
  
  SAP Notes:
  
  Check SAP Notes related to partner determination and WS129 error for your specific SAP version.
  
  
  
  Partner Functions Commonly Used:
  
  AG (Sold-to party)
  WE (Ship-to party)
  RG (Payer)
  RE (Bill-to party)
  
  
  
  Partner Determination Procedure:
  
  Controls which partner functions are required, optional, or suppressed for a given transaction.
  
  
  
  
  Summary
  
  
  
  Aspect
  Description
  
  
  
  
  Cause
  Missing or incorrect partner function assignment in master data or partner determination.
  
  
  Effect
  System cannot determine partner data, causing error WS129 during document processing.
  
  
  Solution
  Maintain partner functions in master data, check and assign partner determination procedures, verify sales document partner data, and review custom code.
  
  
  
  
  If you provide the specific transaction or scenario where the error occurs, I can help you with more targeted steps.