Diagnosis
The schedule you have maintained is not applicable to business eventplanning because it only consists of the business event duration indays and hours. However, business event planning requires a schedulewith an exact sequence of day descriptions (either a day schedule fromtable T770B, or a user-defined schedule using the "user-definedschedule" function).
User action:
When changing a schedule by using the "Change" function, you mustensure that the resulting schedule contains either a valid day schedulefrom table T770B, or a user-defined schedule, which you can enter byusing the "user-defined schedule" function.