With tcode SE11 i have check the 2 tables. The table BSAD has no record.
i don't know why
when i use tcode RSA3 to check the datasource, 0CO_OM_CCA_20 there are no record
but when i display datasource 0CO_OM_CCA_20 (in PSA area) in BW dev system (this datasource is already replicated), there are still more than 1000 records.
so i am wonderning if i forgot some thing