How To Fix VP450 - Partner function & not defined at header level

SAP Error Message - Details

• Message type: E = Error

• Message class: VP - Vertriebsbelegpartner

• Message number: 450

• Message text: Partner function & not defined at header level

What causes this issue?

The <GL:partner_function>partner function</> &V1& is defined as item
partner function in <GL:Customizing>Customizing</> and therefore does
not exist in the document at header level.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VP450 - Partner function & not defined at header level ?

  The SAP error message:
  VP450 Partner function & not defined at header level
  typically occurs in Sales and Distribution (SD) module when processing sales documents (like sales orders, deliveries, billing documents), and it indicates that a required partner function is missing or not maintained at the header level of the document.
  
  Cause
  
  The partner function (e.g., Sold-to party, Ship-to party, Payer, Bill-to party) that is mandatory for the sales document type or process is not assigned or maintained at the header level of the sales document.
  The system expects this partner function to be present because it is defined as mandatory in the partner determination procedure for the sales document type.
  This can happen if:
  
  The partner function was accidentally deleted or not entered.
  The partner determination procedure is incorrectly configured.
  The sales document type requires a partner function that is not maintained in the master data or document.
  Customization or user exit logic removed or failed to add the partner function.
  
  
  
  
  Solution
  
  
  Check the Partner Functions in the Sales Document:
  
  Go to the sales document (e.g., VA01/VA02 for sales order).
  Navigate to the Partners tab.
  Verify if the required partner function (shown in the error message) is maintained.
  If missing, add the partner function with the correct partner number.
  
  
  
  Verify Partner Determination Procedure:
  
  Use transaction VOPA to check the partner determination procedure assigned to the sales document type.
  Ensure that the partner function in question is assigned and set as mandatory if required.
  Check the partner determination procedure assigned to the sales document type in SPRO under:
  Sales and Distribution -> Basic Functions -> Partner Determination -> Set Up Partner Determination
  
  
  
  Check Customer Master Data:
  
  Ensure that the partner functions are correctly maintained in the customer master (XD03/VD03).
  Sometimes missing or incorrect partner assignments in the customer master can cause issues.
  
  
  
  Review Custom Code/User Exits:
  
  If there are user exits or BADIs related to partner determination or sales document processing, check if they are removing or failing to add the required partner function.
  
  
  
  Recreate or Correct the Sales Document:
  
  If the document is incomplete or corrupted, try recreating it or correcting the partner functions.
  
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  VA01 - Create Sales Order
  VA02 - Change Sales Order
  VA03 - Display Sales Order
  VOPA - Partner Determination Procedures
  XD03 / VD03 - Display Customer Master
  
  
  
  SAP Notes and Documentation:
  
  SAP Note 0000000 (example) - Check for specific notes related to partner function errors.
  SAP Help Portal: Partner Determination in SD
  
  
  
  Partner Functions Commonly Used:
  
  AG - Sold-to party
  WE - Ship-to party
  RG - Payer
  RE - Bill-to party
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Required partner function missing at header level of sales document
  
  
  Solution
  Maintain the missing partner function in the sales document partners tab
  
  
  
  Verify and correct partner determination procedure configuration
  
  
  
  Check customer master data for partner assignments
  
  
  
  Review custom code that may affect partner functions
  
  
  Related Info
  Transactions: VA01, VA02, VOPA, XD03
  
  
  
  SAP SD Partner Determination configuration in SPRO
  
  
  
  
  If you provide the exact partner function code (the "&" in the message is a placeholder for the actual partner function), I can help you with more specific instructions.