Supplier Portal - Self Registration

Hi All-

We are implementing the Supplier Collaboration Business Package 60.1 (Enterprise Portal 7.0). Corresponding Backend systems are SRM 4.0 (ECS), ECC 5.0 and BI 7.0. To enable the self registration/User Creation of suppliers, we need to create the Supplier Company - User ID relationship on the portal, which will then be replicated and used to build the security restrictions on the corresponding backend systems.

The Enterprise Portal uses the Trading Partner Directory (TPD) concept to Cache Upload the Vendors from either SUS or ECC. Currently, i am able to obtain vendors from both the systems, however following are the issues that i encounter:

SUS as the TPD Source

Issues

1.) Vendors that are not identified as SUS Vendors, should also be replicated to SUS to use them as a data source in the User creation. If i proceed this route, the communication method for all the Non SUS Vendors will be flagged to XML (Portal Vendors), however these vendors actually have a different communication method.

Questions:

1.) Transfer Vendor to SUS from BBPMAININT. (Is there an automated way to flag a select number of suppliers with the Portal Vendor option?)

2.) Vendors that are not SUS Vendors, unflag them as Portal Vendors and revert back to original communication method. (Again any automated way to achieve this?)

ECC as the TPD Source

Issues:

All Vendors that are not neeeded on the supplier portal are cache uploaded into the portal, there making it difficult to find the appropriate vendor code. (Replicates Vendors with all account groups)

Questions:

1.) Is it possible to restrict the Vendor Codes being cache uplaoded into the Supplier Portal?

Also, if there is a better way of achieving this, please let me know.

Thanks,

Sundeep