SAP Message 5A434 - Schedule pattern and user-defined schedule are not allowed together ->F1

Diagnosis
The day schedule can either be determined
- by a day schedule from table T770B
or
- by a user-defined schedule (the "user-defined schedule" function)
The day schedule cannot be defined using both methods at once.
User action:
If you have already entered or chosen a day schedule using the "Dayschedule" field in table T770B, you must delete the contents of the"Day schedule" field before you can enter a user-defined schedule usingthe "user-defined schedule" function.
If you have already entered a user-defined schedule, you must delete itcompletely by accessing the "user-defined schedule" function and thenusing the "delete list" function. You can then enter or choose a dayschedule in the "Day schedule" field of table T770B.