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.

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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