Please Let me know the RFC for Vendor

Hello Experts,

I want to fecth the Supplier information from SAP server to PDM server (non sap) using RFC call.But the LFA1 have some customised fields..

1) I want the RFC or BAPI which Gives the supplier details with customised fields in LFA1.

2) How Can I code In the PDM server??I mean How can I call In the PDM script??

Please send me how to write a script and code of the script??

Thanks In Advance

Preethi