Add custom fields in MM01 under basic data1 tab.
Step 1: Add custom fields in table MARA by using append structure. * Goto SE11. * Give table name as MARA, click on display. * Click on append structure and click on create. * Save and activate. Step 2: Goto SPRO -> click on IMG -> logistics general -> material master - Configuring the material master ->Execute: Create Program for Customized Sub screens. * Provide custom Function group name ( ZFG_AB_MM01) and click on SAVE. * Check the Function group in SE80(ZFG _AB_MM01) . Step 3: Goto SPRO -> click on IMG -> logistics general -> material master ...