How To Fix SWR120 - The element "Key" of the Wf-XML request contains an invalid value

SAP Error Message - Details

• Message type: E = Error

• Message class: SWR - Business Workflow: WAPI Interfaces

• Message number: 120

• Message text: The element "Key" of the Wf-XML request contains an invalid value

What causes this issue?

The element <AB>Key</> of the Wf-XML request contains an invalid value,
for example the parameter <AB>localkey</> may have an invalid workflow
ID.

System Response

A Wf-XML exception results, which you can view with the transaction
<DS:TRAN.SWXML>Selection Report for XML Documents</> (selection date:
&v2&, selection time: &v3&).

How to fix this error?

Check the element <AB>Key</> in the Wf-XML request.

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.