Automatic execution of T.code.

Hi All,

we have a requirement from customer : whenever there is a change in the bank keys master data in FI the change should be update in HRMS system as well, we are using standard FI08 for the requirement . But the execution of FI08 is not manual i.e., when there is change in FI01 , FI02 the t.code FI08 should be executed automatically and create an idoc and transfer it to hrms.

Could anyone explain how to set FI08 as an automatic execution ?.