Hi Amlan,
We are doing a similar enhancment by creating two different security deposits and we have gone exactly same path for deposit request which is another type of deposit we want to implement.
We are able to leverage 0800 event also.
But we are getting error at LFKK_SECF00 (FORM BUILD_POST_ITEM).
Somehow it is not clearing the flag (Item is a Down Payment/Down Payment Request), which is causing the system to populate tax jurisdiction code. And when FM 'FKK_FKKOP_CMPLETE_CHECK' see tax jursdction value populated it gives error message:
E194: Taxes with jurisdiction code not permitted with down payments.
Please suggest any way out. Thanks much.!
Best Regards,
Mandeepak