It seems in description of SubPeriodStartDate in summary record type SY04.01 is not correct. It says "The ReportingSubperiodStartDate must not be earlier than than the <span>UsageEndDate</span> provided in the relevant header record."
I think it should be "The ReportingSubperiodStartDate must not be earlier than the UsageStartDate provided in the relevant header record."
Please advise.
Thanks,
Grigor Margaryan