User Exits

to add fields in the material master screen: try with mga00001 mga00002 mga00003

these user exits material master (industry): checks and enhancements material master (industry): number assignment material master (industry and retail): number display

refer these steps also http://sap.ittoolbox.com/groups/technical-functional/sap-r3-dev/screen-exit-onmm01-mm02-mm03-322717# practise by maha: --> --> --> --> --> --> --> -->

go to se11. click on append structure. enter the field name zsercla create the data element create the domain save, check and activate activate the final mara table. u can see the new field in the output fields of mara table.

now how to add the screen in the mm01 screen.. --> tcode --> spro-->sap ref img-->go to node logistics-general-->material master-->configuring the material master-->define structure of data screens for each screen sequence-->find ssq 21(std ind.(short) tab pages)-->select this tab and copy the screen sequence 21 into some zp(example), --> and select screen number 7 for basic data1 tab, --> there 10 subscreens are there among which 7 are used and the remaining 3 subscreens are empty. --> then copy the programme saplmgd1 into zprogram and copy the fields from mara table that u have appended and copy the logic from previous programmes in the subscreens in tab basicdata1 tab. or by pavan: create the append structure on the mara table. the sap note 44410 describes how to add the new fields to the screen and how the updating will work. 1. make a copy of function group mgd1to zmgdi as stated inthe ossnote using program copymgdi. 2. goto se38 enter program name saplzmgdi click display and goto--> program---> other object---> enter screen number '0001' and add your fields to the subscreen which should apper on the the general data section of the basic data1 tab for the tcode mm01 2. make the changes stated in sap note. 3. after make the changes the functional analyst will need to make some configuration changes. 4. spro -> logistic general -> material master -> configuring materal master -> define structure of data screens sequence. 5. select ssq = 21 then click on subscreens select basic data1 6. enter in the new screens that were built 7. change the row that was create putting in the program (function group program) that was created in step 2.

check this link... here shown how to implement screen exit in mm01/02/03 tcodes. --> http://www.saptechnical.com/tutorials/exitsbadis/mm/mm01.htm