How To Fix WS854 - Interface &1 was filled incorrectly by the calling application

WS854 - Overview

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 854

• Message text: Interface &1 was filled incorrectly by the calling application

What causes this issue?

Condition information for creating conditions was transferred in change
structure &1. This is not permitted since it generates incorrect
documents

System Response

The system cannot continue processing.

How to fix this error?

Check the interface parameters.

Procedure for System Administrators

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.

WS854 - Details

• SAP Error Message:
  WS854 - Interface &1 was filled incorrectly by the calling application
  
  
  Cause:
  This error occurs when an interface structure or parameter passed from an external program or calling application to an SAP function module or BAPI is not filled correctly. The data provided does not meet the expected format, type, length, or mandatory fields required by the SAP interface.
  Common causes include:
  
  Missing mandatory fields in the interface structure.
  Incorrect data types or lengths.
  Incorrect sequence or structure of the data.
  Passing empty or null values where not allowed.
  Data inconsistencies or invalid values that SAP cannot process.
  
  
  
  Solution:
  
  
  Check the Interface Documentation:
  Review the SAP interface or BAPI documentation to understand the exact structure, mandatory fields, and data types expected.
  
  
  Validate Data Before Passing:
  Ensure the calling application populates all mandatory fields correctly and adheres to the expected data types and lengths.
  
  
  Debug the Interface Call:  
  
  Use transaction SE37 or SE80 to test the function module or BAPI with sample