How To Fix WSS043 - Sign: wsu:Id attribute is missing, signing not possible

WSS043 - Overview

• Message type: E = Error

• Message class: WSS - Web Services Security

• Message number: 043

• Message text: Sign: wsu:Id attribute is missing, signing not possible

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WSS043 - Sign: wsu:Id attribute is missing, signing not possible ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WSS043 Sign: wsu:Id attribute is missing, signing not possible
  
  
  Cause:
  This error occurs during the processing of SOAP messages secured with WS-Security in SAP PI/PO or other SAP Web Services components. Specifically, the error indicates that the XML element that needs to be signed does not have the required wsu:Id attribute.
  
  The wsu:Id attribute is part of the WS-Security specification and is used to uniquely identify XML elements for signing and referencing.
  Without this attribute, the signing engine cannot locate the element to apply the digital signature.
  This usually happens if the incoming or outgoing SOAP message is missing the wsu:Id attribute on the element that needs to be signed, or if the message structure does not conform to WS-Security standards.
  
  
  When does it typically occur?
  
  When SAP PI/PO or SAP Web Service client/server tries to sign a SOAP message.
  When the WS-Security configuration expects a wsu:Id