I haven't seen any clear instructions to do this in internet, so I hope it comes handy to someone.
- Go to https://developer.apple.com/account/resources/identifiers/list/merchant.
- Select identifiers.
- At the side of the magnifier icon (to filter), click on
Merchant IDs
. - Now click on the
+
icon to add a new record. Now Make sure thatMerchant IDs
is selected and click Continue. - In
Description
type a representative name for this Merchant ID record (I useName of the Bussiness + ENV
, likeAwesome cakes test
) andIdentifier
use the reverse-domain name style here (it's up to you it's just an id, I usemerchant.com.awesomecakes.myapp.test
). - Click on Continue and click Register.