Hi Ram,
Did you check whether the website method is triggering when you click on hyperlink?
i hope you can add message by using class instance cl_bsp_wd_message_service method add_message().
sample code:
DATA: lr_msg_srv TYPE REF TO cl_bsp_wd_message_service.
lr_msg_srv = cl_bsp_wd_message_service=>get_instance( ).
lr_msg_srv->add_message( iv_msg_type = 'E'
iv_msg_id = 'Message Class'
iv_msg_number = '031'
iv_msg_v1 = lv_msg_txt
Best Regards,
Dharmakasi.