How To Fix WS307 - Document & is a supplier billing document

WS307 - Overview

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 307

• Message text: Document & is a supplier billing document

What causes this issue?

Document &V1& which you entered exists, but does not have the document
category you selected.

System Response

An update is simulated if you confirm this warning message.

How to fix this error?

Please check the document number.

Error message extract from SAP system. Copyright SAP SE.

WS307 - Details

• SAP Error Message:
  WS307 - Document & is a supplier billing document
  
  
  Cause:
  The error message WS307 occurs when you try to perform an operation on a document that is identified as a supplier billing document (i.e., an invoice or credit memo from a vendor) in a context where such a document is not allowed or expected.
  For example, this error often appears when you attempt to post or process a document in a workflow or transaction that expects a customer document or a different document type, but the system finds that the referenced document is a supplier billing document.
  
  Explanation:
  
  The system checks the document type or the document category.
  If the document is flagged as a supplier billing document (vendor invoice/credit memo), but the process expects a customer document or a different document type, the system throws this error.
  This is a safeguard to prevent incorrect processing of documents.
  
  
  Common Scenarios:
  
  Trying to create a payment or clearing