Diagnosis
For the combination of material &V1& and plant &V2&, a listing period inthe past already exists.

System Response
During the automatic assignment of references, this message isdisplayed as an error message. Multiple references cannot beautomatically assigned for this combination.
During the dialog program References for Materials without history
, this message is displayed as a warning. You can press Enterand manually create a reference assignment.
During the transfer of a reference assignment to other plants in thedialog program, this message can be displayed as a warning or as anerror, depending on the control indicator Create Assignment even ifhistorical data already exists. If this indicator is set, then themessage is issued only as a warning, and the assignment is transferred.Otherwise, the message is displayed as an error, and the assignment isnot transferred.