Problem ROS Transfer To SRM

Dear SAP SRM expert,

I have a problem when transferring potential supplier from supplier presselection screen into SRM,

I have implemented SRM 7 EHP 3 SPlvl 3, and implemented ROS and SRM in one client,

I know that to transfer potential supplier from ROS into srm is using manage business partner -> create bidder -> add external bidder,

i configure the external services,and add the supplier directory catalog in PPOMA_BBP attribute,

after that i try to transfer the potential supplier

below are the step i do

In NWBC using strategic sourcing role go to manage business partner -> create bidder -> add external bidder from

after that i select the potential supplier from supplier presselection screen

After i click transfer, the screen only gave blank page,

below are my setting for the external services

I have another system (demo system) and configure using the same setting and its work fine,

can someone help me with this?why my development system not transfer the potential supplier properly?