Hallo Erwin,
OSS 2038668 oder 46237
Symptom
Production order's start/finish date has been set as Non-working day.
Environment
SAP ERP system release independent.
Reproducing the Issue
Run T-code CO01 to create a production order.
Non-working day has been set for production order 's start/finish date. (2014.07.05 is Saturday)
Cause
There are 2 reasons can cause such problem.
1. Customizing setting in T-code OPU3.
2. If production order 's work center have factory calendar, production order will do scheduling base on work center's factory calendar,not base on plant calendar. so in this case, work center's calendar need to be checked instead of plant calendar.
Gruß
Wolfgang