Dear Priya,
J1IEX_C - Capture Excise Invoice
J1I5 - Part 1 Posting.
J1IEX_P - Post Excise Invoice - Part 2 Updation
These steps can can be automated, provided you have concerte logic for part1 posting (J1i5). ie J1i5 will list all the material documents (Issue and Receipts ) based on the the localization customization of movement types incuding issues and receipts and reversals. You need to get more clarity from process perpective to automate J1i5. If you want to put some controls, validations while posting the J1i5 use FM J_1I7_USEREXIT_J1I5_VALIDATE. Also Create a variants for each Classification indicatior, this will allow use to simple click the variant and execute and post.
Hope I answered your question.
Regards
Aromal R