Replication of data from HR to SRM

Hi SRM'ers!

I currently work on SRM 5.0, in classic scenario with ECC 6.0.

We try to implement data replication from HR to SRM: UO, Positions and users, and also attributes (infotypes 1000, 1001, 1002...).

We manage to replicate via Report RHALEINI: UO and Positions but we have issue with persons. Indeed, the user is created in SRM but not attached to the position in ppoma_bbp.

Moreover when trying to attach it to the position via Tx po13, no business partner is created! The object link is not created.

What have we missed? Has somebody already faced the problem?

Please help!

Thanks.

morgane