Is it possible to Edit/Delete a line item in the Scope Tab of a RFC in Solution Manager 7.1?

A user has created a Normal Change line item but has forgotten to add a document type before approving it. When we try to release the NC for development, we get the error message saying "data in request for change scope assignment block missing or incorrect".

Is there a way to delete this assignment or edit it?

What is the best possible solution?

Thanks