How to populate a Error message in WebUI Screen

Question

Dear Experts,
I have a small issue in Lead creation screen. I need to restrict the followup document if the lead end date is lesser than the system date, if the end date lesser than the system date system should through a error message in web Ui Screen and the lead follow up creation should be stoped.
We found an enhancement spot in backend(GUI) of lead creation we raised the error message in the backend screen. Here its working fine, But we are not able to get any error message in WebUI lead creation screen.
We written the code in CREATE_ORDER Method of lead creation in GUI ( tcode : CRMD_ORDER). We tried to debug the program using external debuger from webui but its not getting triggered.
Pls suggest me, how to raise a error message for WEBUI lead follow up creation validation.
Kindly do the needful.
Reg,
Anandhan

Answer 1

HI Anandhan,
Try this way,
This should work.
lr_global_messages type ref to cl_crm_genil_global_mess_cont,
        lr_core                 type ref to cl_crm_bol_core,
  "Instantiate the error message class.
  lr_core = cl_crm_bol_core=>get_instance( ).
  if lr_core is bound.
    lr_global_messages ?= lr_core->get_global_message_cont( ).
  endif.
        if lr_global_messages is bound.
          call method lr_global_messages->add_message
            exporting
              iv_msg_type       = lv_msg_type
              iv_msg_id         = '
              iv_msg_number     =
              iv_show_only_once = 'X'
              iv_msg_v1         =
              iv_msg_v2         =
        endif.