How To Fix WTADDI257 - & is not a valid supplier for requesting additionals via BAPI

WTADDI257 - Overview

• Message type: E = Error

• Message class: WTADDI - Additionals: Messages

• Message number: 257

• Message text: & is not a valid supplier for requesting additionals via BAPI

What causes this issue?

Vendor &V1& has attempted to request an additionals IDoc for an
additionals document via BAPI. This vendor is not allowed to use this
function.

System Response

The additionals IDoc is not generated.

How to fix this error?

First check your entries.
If you are still sure that you have entered the correct vendor, you can
make the necessary changes to the additionals vendor directly in the
additionals monitor. Then you can start the BAPI call again.

Error message extract from SAP system. Copyright SAP SE.

WTADDI257 - Details

• Certainly! Here's a detailed explanation regarding the SAP error message WTADDI257:
  
  SAP Error Message: WTADDI257
  Message Text:
  & is not a valid supplier for requesting additionals via BAPI
  
  
  Cause:
  This error occurs when you try to request additional services or items (often in the context of travel management or vendor-related processes) via a BAPI (Business Application Programming Interface), but the supplier/vendor you are referencing is not recognized as valid for this operation.
  Specifically, the system checks whether the supplier/vendor is allowed or configured to provide additional services or items in the context of the BAPI call. If the supplier is not set up correctly or does not meet the criteria, the system throws this error.
  Common causes include:
  
  The supplier/vendor master data is incomplete or missing required fields.
  The supplier is not flagged or categorized correctly for the type of additional services requested.
  The BAPI expects a supplier from a specific vendor category or with certain attributes, which the current