How To Fix VN026 - Partner & is not defined

SAP Error Message - Details

• Message type: E = Error

• Message class: VN - Nachrichtensteuerung

• Message number: 026

• Message text: Partner & is not defined

What causes this issue?

You have entered a partner which is not defined in the user master.

How to fix this error?

INCLUDE NA_EINGABE_PRUEFEN

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VN026 - Partner & is not defined ?

  The SAP error message VN026: "Partner & is not defined" typically occurs in the context of vendor master data or purchasing documents when the system expects a business partner (vendor) to be defined but cannot find the relevant partner information.
  
  Cause
  
  The error indicates that the partner function (e.g., ordering address, invoicing party, goods supplier) assigned in a purchasing document or vendor master record is not defined or maintained.
  This can happen if:
  
  The partner function is missing in the vendor master data.
  The partner function is not assigned in the purchasing document (e.g., purchase order, contract).
  The partner determination procedure is incomplete or incorrectly configured.
  The partner number (vendor or business partner) is not maintained or is incorrect.
  
  
  In some cases, this error can also occur if the system expects a partner in a certain role but the partner is not assigned or the partner role is not maintained in the partner determination procedure.
  
  
  Solution
  
  
  Check Vendor Master Data:
  
  Go to transaction XK03 (Display Vendor) or BP (Business Partner) and verify that the partner functions are correctly maintained.
  Ensure that the relevant partner functions (e.g., ordering address, invoicing party) are assigned to the vendor.
  
  
  
  Check Partner Determination Procedure:
  
  Verify the partner determination procedure assigned to the purchasing document type or vendor account group.
  Use transaction SPRO ? Materials Management ? Purchasing ? Partner Determination ? Set Up Partner Determination.
  Ensure that the required partner functions are included and correctly configured.
  
  
  
  Check Purchasing Document:
  
  In the purchase order or contract, check if the partner function is assigned.
  If missing, manually assign the partner or correct the partner number.
  
  
  
  Maintain Partner Functions in Vendor Master:
  
  If the partner function is missing, maintain it in the vendor master under the relevant purchasing data or accounting data views.
  
  
  
  Check Customizing for Partner Roles:
  
  Sometimes, the partner role might not be assigned to the vendor account group or document type.
  Review and adjust the customizing settings accordingly.
  
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  XK01/XK02/XK03 – Create/Change/Display Vendor Master
  ME21N/ME22N/ME23N – Create/Change/Display Purchase Order
  BP – Business Partner Maintenance (for SAP S/4HANA)
  SPRO – Customizing (for partner determination settings)
  
  
  
  SAP Notes and Documentation:
  
  Check SAP Notes related to partner determination and vendor master data.
  Refer to SAP Help Portal for detailed explanation of partner determination in MM and FI modules.
  
  
  
  Common Partner Functions in Purchasing:
  
  VN – Vendor
  WE – Goods Supplier
  RE – Invoice Recipient
  AG – Ordering Address
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  VN026: Partner & is not defined
  
  
  Cause
  Missing or undefined partner function in vendor master or purchasing document
  
  
  Solution
  Maintain partner functions in vendor master, check partner determination procedure, assign partner in purchasing document
  
  
  Transactions
  XK03, BP, ME21N, SPRO
  
  
  
  
  If you provide the exact context (e.g., transaction where error occurs, document type), I can help with more specific steps.