In one of earlier post I
mentioned Time characteristics as Rule Type in Transformations. We can see how
useful they are here.
Especially in case of derivation of week (0CALWEEK) based on calendar day (0CALDAY).
To decide into which week particular day falls might be tricky. Basically the
main problem here is to decide about first/last week of year. It depends on calendar
implementation which may differ from country to country. By default BW logic is
govern by ISO (International
Organization for Standardization). Its definition 8601 of first week (in
short) is following:
- First
day of the week is always Monday
- First
week in year is week that includes January 4th
You can override this
definition by implementing BadI CALENDAR_DEFINITION (for SAP Basis 62 & 64)
and by Enhancement Spot (Basis 7). For details refer to SAP Notes below. To be
honest this is not easy topic. :-)
1063178 - Calendar
definition differs from ISO 8601
810900 - Counting
weeks and working days
1520596 - 0CALWEEK
does not support 53 fiscal weeks
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