Event for Material Change and Delete

Question

Experts,
  Is any Standard events available to trigger the workflow when the material is changed or deleted from the material master.

Answer 1

First check any event is getting Triggered or not. If yes job done use it if not then find user Exit from which you can trigger event by writing code.
You can make use of FM
SAP_WAPI_CREATE_EVENT
SWE_EVENT_CREATE
to trigger custom event.
You can check this code
FUNCTION zwf_process_honorarium .
""Local Interface:
*"  IMPORTING
*"     VALUE(I_EMP_NUMBER) TYPE  PERNR_D
*"     VALUE(I_EMP_NAME) TYPE  ENAME
*"     VALUE(I_BEGIN_DATE) TYPE  BEGDA
*"     VALUE(I_CURRENT_SAL) TYPE  ANSAL
*"     VALUE(I_HON_SAL_GRD) TYPE  TRFGR
*"     VALUE(I_HONORARIUM_SAL) TYPE  ANSAL
*"     VALUE(I_JUSTIFICATION) TYPE  CHAR100
*"     VALUE(I_PERCENT_DUTY) TYPE  INT1
*"     VALUE(I_END_DATE) TYPE  ENDDA
  INCLUDE <cntn01> .
  DATA:i_emp_details TYPE STANDARD TABLE OF p0001,  "Employee Details
       wa_request    TYPE p0001,                    "Workarea for Employee details
       v_country_grp TYPE molga,                    "Country SubGrouping
       v_object_key  TYPE sweinstcou-objkey,        "Key for the buisness object ZWOBUSHONO
       v_request_det TYPE zwf_ms_honorarium.        "PCR data
  CONSTANTS: c_bo_hono     TYPE swo_objtyp VALUE 'ZWOBUSHONO',
             c_event_hono  TYPE swo_event  VALUE 'HonReq',
             c_infy_type_1 TYPE infty      VALUE '0001'.
Event Container declaration
  swc_container i_event_cont.
  swc_create_container i_event_cont.
Reading the INFO TYPE 0001 to obtain the
Employee details
  CALL FUNCTION 'HR_READ_INFOTYPE'
    EXPORTING
      pernr           = i_emp_number
      infty           = c_infy_type_1
      begda           = sy-datum
      endda           = sy-datum
    TABLES
      infty_tab       = i_emp_details
    EXCEPTIONS
      infty_not_found = 1
      OTHERS          = 2.
SY-SUBRC check is not required as the error
handelling will be done by WorkFlow rule
resolution.
Filling up the PCR data in structure v_request_det
which will be passed to event container.
  v_request_det-emp_number     = i_emp_number.
  v_request_det-name           = i_emp_name.
  v_request_det-begin_date     = i_begin_date.
  v_request_det-current_sal    = i_current_sal.
  v_request_det-hon_grade      = i_hon_sal_grd.
  v_request_det-hon_grd_sal    = i_honorarium_sal.
  v_request_det-justification  = i_justification.
  v_request_det-percent_duty   = i_percent_duty.
  v_request_det-end_date       = i_end_date.
  CLEAR wa_request.
  READ TABLE i_emp_details INTO wa_request INDEX 1.
  IF sy-subrc = 0.
  Retrieving the Country SubGrouping for the employee
    SELECT SINGLE molga
      FROM t001p
      INTO v_country_grp
     WHERE werks = wa_request-werks
       AND btrtl = wa_request-persk.
  ENDIF.
Sending the relevant data to event container
  swc_set_element i_event_cont 'RequestData'     v_request_det.
  IF sy-subrc <> 0.
No Processing needed.
  ENDIF.
  swc_set_element i_event_cont 'PersonalArea'    wa_request-werks.
  IF sy-subrc <> 0.
No Processing needed.
  ENDIF.
  swc_set_element i_event_cont 'CountryGrouping' v_country_grp.
  IF sy-subrc <> 0.
No Processing needed.
  ENDIF.
  swc_set_element i_event_cont 'EmpSubGrp'       wa_request-persk.
  IF sy-subrc <> 0.
No Processing needed.
  ENDIF.
Raising the event to trigger the workflow
  v_object_key = i_emp_number.
  CALL FUNCTION 'SWE_EVENT_CREATE'
    EXPORTING
      objtype           = c_bo_hono
      objkey            = v_object_key
      event             = c_event_hono
    TABLES
      event_container   = i_event_cont
    EXCEPTIONS
      objtype_not_found = 1
      OTHERS            = 2.
  IF sy-subrc <> 0.
No Processing needed.
  ENDIF.
  COMMIT WORK.
Thanks
Arghadip