Internal error at IMPORT DYNPRO (dynpro &)

What causes this issue?

The screen does not exist.
Your transaction variant includes a screen that does not exist in the
SAP system. This can be the case, if the transaction it is based on has
been changed.

System Response

No dialog box for value selection (settings) is displayed.

How to fix this error?

You may ignore this message. The screen will be automatically deleted
from the transaction variant when you save it.

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.