problem in deleting PSA requests in process chain

Hi BW gurus,

I have a problem in a process chain where I can't delete PSA requests . The datasource is custom, it's based on a R/3 table (VIBDROOCC) and it's loaded in full mode.

In the process chain I inserted the "Deletion of Requests from PSA" step with Successful and incorrect flags but it doesn't works.

In the same step I inserted antoher 2 custom datasources that the 1st is based on a custom Function Module and the 2nd is based on a database view: with these datasources the deletions work correctly.

Do you know is there a limitiation or a error with this process chain step while using datasources based directly on database tables? I'm 7.02 BW release.

Thanks for any help.

SB