How To Fix E0428 - Enter a valid partner function

SAP Error Message - Details

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 428

• Message text: Enter a valid partner function

What causes this issue?

The specified partner function '&v3&' is not valid.

How to fix this error?

Please enter a valid partner function. Use the possible entries to
display an overview of the partner functions.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0428 - Enter a valid partner function ?

  The SAP error message E0428, which states "Enter a valid partner function," typically occurs when a user is trying to enter or process data related to partner functions in a business transaction (such as sales orders, purchase orders, etc.) and the system does not recognize the partner function being entered.
  Cause:
  
  Invalid Partner Function: The partner function code entered does not exist in the system or is not defined for the specific business transaction.
  Configuration Issues: The partner function may not be properly configured in the system for the relevant document type or business process.
  Missing Master Data: The partner function may not be assigned to the relevant master data (like customer or vendor master records).
  Authorization Issues: The user may not have the necessary authorizations to access or modify the partner functions.
  
  Solution:
  
  
  Check Partner Function Code: Verify that the partner function code you are entering is correct and exists in the system. You can do this by checking the configuration settings in the relevant customizing transaction (e.g., SPRO).
  
  
  Review Configuration: 
  
  Go to the configuration settings for partner functions in the relevant module (e.g., Sales and Distribution, Materials Management).
  Ensure that the partner function is defined for the document type you are working with.
  Check if the partner function is assigned to the relevant customer or vendor master data.
  
  
  
  Update Master Data: If the partner function is missing from the master data, you may need to update the customer or vendor master records to include the necessary partner functions.
  
  
  Check Authorizations: Ensure that the user has the necessary authorizations to access and modify partner functions. This may involve checking user roles and profiles in the SAP system.
  
  
  Consult Documentation: If you are unsure about the partner functions and their configurations, refer to SAP documentation or consult with your SAP administrator or functional consultant.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like VD02 (Change Customer), XD02 (Change Customer (Centrally)), or MK02 (Change Vendor) to check and update partner functions in master data.
  Customizing Path: The customizing path for partner functions can typically be found under:
  
  Sales and Distribution: SPRO -> Sales and Distribution -> Basic Functions -> Partner Determination -> Define Partner Functions
  Materials Management: SPRO -> Materials Management -> Purchasing -> Partner Determination -> Define Partner Functions
  
  
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  
  By following these steps, you should be able to resolve the E0428 error and successfully enter a valid partner function in your SAP system.