IDoc SOAP Namespace: EOIO-ID invalid

What causes this issue?

This IDoc was sent using the SOAP protocol, with the namespace <ZH>
'urn:sap-com:document:sap:idoc:soap:messages'</> used for the SOAP
request.
INCLUDE BDEOIO_ID_ERROR OBJECT DOKU ID TX

System Response

The IDoc was not accepted by the receiver system.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.