Hi,
That's all right .But I must thank you for the reply!
Yes, I can see records in the table T009B of BW system. And what you said, OB59 is a t-code of ECC side,not in BW side. WK is a customizing kind of fiscal year variant, and stands for week, so 0FISCPER will get week value like 2014014(20140401--->2014014).
Thanks.