Diagnosis
There are data in the run schedule header which do not correspond tothe
production version, for example, routing or BOM data.
A possible reason for the inconsistency is that the production version
has been changed, but the run schedule header has not been updated.
Another reason could be that the MRP controller for the run schedule
header is no longer the same as the MRP controller for the material.

Procedure

-if you want to process the run schedule header data further:
Adjust the production version data in production version maintenance
to match the run schedule header data, go to "Change run schedule
header", and save your data.
-if you want to process the production version data further:
When you change the run schedule header, select the pushbutton
'Copy version data' (Umsch+F6).
-if the MRP controller is the inconsistent factor:
Adjust the MRP controller in the material master or, when you change
the run schedule header, select the pushbutton 'Copy version data'
(Umsch+F6).
Subsequently, the system will always determine version data dynamically
in the run schedule header.