Could not delete all remote hierarchy headers

What causes this issue?

A data transfer process for direct access hierarchies was deleted. The
associated headers of the direct access hierarchies for InfoObject &V1&
could not be deleted.

System Response

The hierarchy headers are not deleted. Processing is completed without
errors.

How to fix this error?

If necessary, delete the headers of the direct access hierarchies for
InfoObject &V1& using transaction RSH1. To do this, select the
hierarchies for InfoObject &V1&that are marked as direct access
hierarchies and choose <LS><PF>Delete</></>.

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.