Message type: E = Error
Message class: S~ - Repository API Business Navigator
Message number: 021
Message text: There is already a component &1 that refers on component &2
To insert a customer model you tried to insert a new component refering
to an SAP component. But the component is already refered by an
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Use the existing component to add your model.
Error message extract from SAP system. Copyright SAP SE.