/bobf/cl_frw_factory=>get_message with error Don´t Stop process?

Hi experts.

I'm working with Determinations when i go SAVE data in NWBC.

I used a message error to validate duplicate data;

*------------------------------------------------------------

             lv_message-msgty = 'E'.

             lv_message-msgid = 'ZTM_BLOCK_NFE'.

             lv_message-msgno = '001'.

             IF eo_message IS NOT BOUND.

               eo_message = /bobf/cl_frw_factory=>get_message( ).

             ENDIF.

             eo_message->add_message(

               is_msg  = lv_message

               iv_node = is_ctx-node_key

               iv_key  = ls_key-key

                ).

*------------------------------------------------------------

This message is showed correctly in NWBC screen but don't stop the save process like se91 class messages.

I need to stop the save process when show this message error.

How can i Do it?

Thanks.