How to know latest timestamp and which field is used for delta field 0BBP_TD_PO_1

Hi Mates,

For 0BBP_TD_PO_1(SRM), what is the delta field and how to know last timestamp of delta.

I am missing records in Delta infopackage in BW.

Normally, for Standard datasouces, we check timestamp in BW0M2_TIMEST table. But in SRM, table is not existing.

If I get information about to know safety lower and upper limits of this datasource. it would be better.

Answers are appreciated.

Thanks