Hi Thankga Mari,
The navigation working here based on the collection you are setting to Navigate_Display outbound plug.
lr_col = cl_crm_uiu_erp_order_tools=>get_partner_entity( iv_partner_id = lv_partner_id
ir_msg_service = lr_msg_service ).
CHECK lr_col IS NOT INITIAL.
op_navigate_display( lr_col ).
If you want to test you can exclude the collection in debug and try, system will not navigate to BP_HEAD component.
Best Regards,
Dharmakasi.