APP Subscriptions / Recipient complex key reconciliation

Hi,

I am looking to reconcile mobile app subscribers with the recipient table (AC Classic).

Table appSubscriptionRcp is extended and link between tables working fine with one column.

Now, I have to make complex reconciliation key with one more column. I cannot find double key example anywhere.

Tried like this (picture below) but think is still working per first column only:

I would like to avoid workflow for reconciliation therefore if there is a way to do it on schema level?

Regards,

Milan