Message type: E = Error
Message class: VN - Nachrichtensteuerung
Message number: 321
Message text: Error in calling selection module for partner function &
The possible entries display function module for partner function
&v1& could not return any values.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
Certainly! Here's a detailed explanation for the SAP error message: SAP Error Message: VN321 - Error in calling selection module for partner function &
Cause: This error occurs when the system tries to call a selection module (a user-exit or function module) assigned to a partner function during vendor master data processing or document processing, but the call fails. The ampersand (&) in the message is replaced by the specific partner function code (e.g., VN, WE, etc.). Common causes include: The selection module assigned to the partner function is not implemented or incorrectly implemented. The function module or user-exit assigned to the partner function is missing or has errors. Incorrect configuration in the partner determination procedure where the selection module is assigned. The function module does not conform to the expected interface or parameters. Authorization or system issues preventing the module from executing properly. Where does this occur? Vendor master data maintenance (transaction XK01, XK02, XK03) Purchase order processing or other procurement documents
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