External requirement not transfered

Hi experts

I am configuring plan driven and trying to transfer PR from R/3 to EBP but when BBP_EXTREQ_TRANSFER is executed the message is PR tranfered, but in SRM side the log in SLG1 is NOT POSSIBLE DETERMINE A VALID REQUESTER TO THE USER 0013

I don't know what is user 0013, someone have some idea about this problem, I think the problem is with the RFC user in the Organizational unit for plan driven.

I have created a rfc user and assigned to it the same user that is in position of the purchasing group.

Is it correct?

Thanks

Nilson