Message type: E = Error
Message class: IH - structuring
Message number: 101
Message text: Select a link object as reference object
You are trying to create an order or a notification for a link object,
but have not yet selected an object.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Place the cursor on a link object. This object will be entered in the
notification or order as the object referred to.
Error message extract from SAP system. Copyright SAP SE.