SAP Message 5A446 - You cannot maintain the schedule at the bus.event => display only -> F1

Diagnosis
For business events (that is, for objects of the type OTYPE $KURS
in T77S0), infotype 1022 (schedule) is set exclusively and uniquelywhilst creating the business event of the report RHKURS00 or of theTransactions PP16, PP17 or PP18.
The user is not allowed to explicitly change or create the infotypesince this might cause inconsistencies.
For this reason, only the display function is possible here.

System Response