An item can only be allocated to visible fields

What causes this issue?

You have allocated a position in the list to a field that the user is
not to see.

System Response

INCLUDE 'KEINE-VERARBEITUNG' OBJECT DOKU ID TX LANGUAGE E

How to fix this error?

Either reverse your selection of the "Invisib." field or the entry of
the list position in the field "DispPos.".

Error message extract from SAP system. Copyright SAP SE.