DATA: lt_request_header TYPE tihttpnvp,
          ls_request_header LIKE LINE OF lt_request_header.

    LOOP AT  me->mr_request_details->technical_request-request_header ASSIGNING FIELD-SYMBOL(<fs_req_header>).
      ls_request_header-name = <fs_req_header>-name.
      ls_request_header-value = <fs_req_header>-value.
      APPEND VALUE #( name = <fs_req_header>-name
                                  value =  <fs_req_header>-value )
                                                                   TO lt_request_header.
    ENDLOOP.