Editing ABAP FM for ESS

Hello Frnds,

We have a requirement in Benifits --> Open Enrollment --> Medical plan --> Edit Plan.

We don't want to show one plant type.

We thought of filtering at abap side only. I found out in trace that from ESS FM HR_BEN_ESS_RFC_OFFER_DETAILS is being called and within which a FM HR_BEN_ESS_SCREEN_CTRL_HEALTH being called.

Here we can filter whats going in the table.

But how it is recommended to change ?

I guess if we change the standard code with access key everything should be taken care.

but if we go for Z Copy then we might need to change a lot of places..

Please recommend.

Thanks

Shobhan