Diagnosis
The planned order has no production dates for the combination ofmaterial, production version and production line you specified.
This may be as a result of the following, for example:
The planned order was scheduled but not using the production line youselected. (The production line is determined by the production versionyou entered in a planned order.)

Procedure
One possibility of finding out what is causing the problem is:
To access the planned order from the detailed dialog box in the tablevia "Change" and reschedule the planned order. Check the scheduling logby choosing "Goto --> Scheduling log". More information is displayed inthe log's warning or error messages.