Incorrect Subobject & maintained in SSCUI &

What causes this issue?

Wrong subobject is maintained in WEBGUI Registry (/cfg/webgui_details)

System Response

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

How to fix this error?

Maintain valid subobject in WEBGUI Registry

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.