the ROS pre-select Screen

Dear ,Expert :

I work in SRM7.0 EHP1 and SP05 ，ROS scenario. II active the function SRM_701_SUCO_SUP_REG.

The supplier can register supplier va. webdynpro "wda_e_suco_sreg". And submit the data .

My peoblem is :

1,the purchaser can find the supplier on the "pro-select screen ".but he can not accept or reject the supplier .The purchaser has the role "/SAPSRM/SUCO_PROCESSOR".

2,I wan to know the screen of the "pre-select "screen is Webdynpro UI or BSP UI ?

look forward to your suggestion

BESTREGARDS

alex