Dear Montee,
You would need to implement a proper BAdi/Enhancement that would be called during the processing.
You would have to maintain all the materials for which you want to block the transaction in a table. At runtime you would need to check if the material exists in the table. If it exists stop processing, else, continue processing.
For example you want to block Materials A, B. You would store them in a custom table ZXXX. At runtime you would check if the material entered is in the table ZXXX.
If it exists.
Raise an error Message and stop processing.
If it does not exist.
Continue Processing.
Please check this sample program from other thread to find BADI and enhancement for a given transaction code. You just need to create a custom program in your system by cut and paste below codes.
REPORT ZTEST.
TABLES: TSTC,
TADIR,
MODSAPT,
MODACT,
TRDIR,
TFDIR,
ENLFDIR,
SXS_ATTRT ,
TSTCT.
DATA: JTAB LIKE TADIR OCCURS 0 WITH HEADER LINE.
DATA: FIELD1(30).
DATA: V_DEVCLASS LIKE TADIR-DEVCLASS.
PARAMETERS: P_TCODE LIKE TSTC-TCODE,
P_PGMNA LIKE TSTC-PGMNA .
DATA: WA_TADIR TYPE TADIR.
START-OF-SELECTION.
IF NOT P_TCODE IS INITIAL.
SELECT SINGLE * FROM TSTC WHERE TCODE EQ P_TCODE.
ELSEIF NOT P_PGMNA IS INITIAL.
TSTC-PGMNA = P_PGMNA.
ENDIF.
IF SY-SUBRC EQ 0.
SELECT SINGLE * FROM TADIR
WHERE PGMID = 'R3TR'
AND OBJECT = 'PROG'
AND OBJ_NAME = TSTC-PGMNA.
MOVE : TADIR-DEVCLASS TO V_DEVCLASS.
IF SY-SUBRC NE 0.
SELECT SINGLE * FROM TRDIR
WHERE NAME = TSTC-PGMNA.
IF TRDIR-SUBC EQ 'F'.
SELECT SINGLE * FROM TFDIR
WHERE PNAME = TSTC-PGMNA.
SELECT SINGLE * FROM ENLFDIR
WHERE FUNCNAME = TFDIR-FUNCNAME.
SELECT SINGLE * FROM TADIR
WHERE PGMID = 'R3TR'
AND OBJECT = 'FUGR'
AND OBJ_NAME EQ ENLFDIR-AREA.
MOVE : TADIR-DEVCLASS TO V_DEVCLASS.
ENDIF.
ENDIF.
SELECT * FROM TADIR INTO TABLE JTAB
WHERE PGMID = 'R3TR'
AND OBJECT in ('SMOD', 'SXSD')
AND DEVCLASS = V_DEVCLASS.
SELECT SINGLE * FROM TSTCT
WHERE SPRSL EQ SY-LANGU
AND TCODE EQ P_TCODE.
FORMAT COLOR COL_POSITIVE INTENSIFIED OFF.
WRITE:/(19) 'Transaction Code - ',
20(20) P_TCODE,
45(50) TSTCT-TTEXT.
SKIP.
IF NOT JTAB[] IS INITIAL.
WRITE:/(105) SY-ULINE.
FORMAT COLOR COL_HEADING INTENSIFIED ON.
sort jtab by OBJECT.
data : wf_txt(60) type c,
wf_smod type i ,
wf_badi type i ,
wf_object2(30) type C.
clear : wf_smod, wf_badi , wf_object2.
LOOP AT JTAB into wa_tadir.
at first.
FORMAT COLOR COL_HEADING INTENSIFIED ON.
WRITE:/1 SY-VLINE,
2 'Enhancement/ Business Add-in',
41 SY-VLINE ,
42 'Description',
105 SY-VLINE.
WRITE:/(105) SY-ULINE.
endat.
clear wf_txt.
at new object.
if wa_tadir-object = 'SMOD'.
wf_object2 = 'Enhancement' .
elseif wa_tadir-object = 'SXSD'.
wf_object2 = ' Business Add-in'.
endif.
FORMAT COLOR COL_GROUP INTENSIFIED ON.
WRITE:/1 SY-VLINE,
2 wf_object2,
105 SY-VLINE.
endat.
case wa_tadir-object.
when 'SMOD'.
wf_smod = wf_smod + 1.
SELECT SINGLE MODTEXT into wf_txt
FROM MODSAPT
WHERE SPRSL = SY-LANGU
AND NAME = wa_tadir-OBJ_NAME.
FORMAT COLOR COL_NORMAL INTENSIFIED OFF.
when 'SXSD'.
wf_badi = wf_badi + 1 .
select single TEXT into wf_txt
from SXS_ATTRT
where sprsl = sy-langu
and EXIT_NAME = wa_tadir-OBJ_NAME.
FORMAT COLOR COL_NORMAL INTENSIFIED ON.
endcase.
WRITE:/1 SY-VLINE,
2 wa_tadir-OBJ_NAME hotspot on,
41 SY-VLINE ,
42 wf_txt,
105 SY-VLINE.
AT END OF object.
write : /(105) sy-ULINE.
ENDAT.
ENDLOOP.
WRITE:/(105) SY-ULINE.
SKIP.
FORMAT COLOR COL_TOTAL INTENSIFIED ON.
WRITE:/ 'No.of Exits:' , wf_smod.
WRITE:/ 'No.of BADis:' , wf_badi.
ELSE.
FORMAT COLOR COL_NEGATIVE INTENSIFIED ON.
WRITE:/(105) 'No userexits or BADis exist'.
ENDIF.
ELSE.
FORMAT COLOR COL_NEGATIVE INTENSIFIED ON.
WRITE:/(105) 'Transaction does not exist'.
ENDIF.
AT LINE-SELECTION.
data : wf_object type tadir-object.
clear wf_object.
GET CURSOR FIELD FIELD1.
CHECK FIELD1(8) EQ 'WA_TADIR'.
read table jtab with key obj_name = sy-lisel+1(20).
move jtab-object to wf_object.
case wf_object.
when 'SMOD'.
SET PARAMETER ID 'MON' FIELD SY-LISEL+1(10).
CALL TRANSACTION 'SMOD' AND SKIP FIRST SCREEN.
when 'SXSD'.
SET PARAMETER ID 'EXN' FIELD SY-LISEL+1(20).
CALL TRANSACTION 'SE18' AND SKIP FIRST SCREEN.
ENDCASE.
Alternatively, you can do the following:
1. For what ever transaction u want the enhancement .. just check for the System-->status (menu) and find out the PROGRAM name....
2. Double click on to the program name and go inside the program (Abap editor)
3. Search for "Call Customer-function " ... and u'll get some search results .. If u get results then u have enhancement in that tcode .....
4. Then it actually calls a Function module .... copy the Function module name .... go to SE80 (object navigator) click on "Repository Information system" then Customer Enhancements .... Give the Function module name in the "Components" field and click Execute ....
ull get a list of Enhancements related to that Componene....
5. Choose which ever enhancement will suit ur business need ..
6. Go to CMOD... create a project .... assign ur enhancement ... and then code ur logic.... activate ur enhancement in CMOD ....... Ur Buisness need will be solved...
For a user exit......
Finding whether there is any User Exit or not for tcode VA42
1. For what ever transaction u want the user exit .. just check for the System-->status (menu) and find out the PROGRAM name.... ( The program name would be for our scenario "SAPMV45A" )
2. Double click on to the program name and go inside the program (Abap editor)
3. Search for the word "USEREXIT" .... u ll find all the user exits in the search result .. and find ur's then ...
Hope this will help.
Regards,
Naveen.
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