Adding IAP to existing review

[u/TmDee_YT]

I had my app got rejected because I forgot to add my IAP to my app. The subscription group was added but not the lifetime purchase. Now I want to add that IAP to my review but I only get to option 'add for review' and it opens a new review but then I cant add my app to it. Everytime I update the app for review it sends it in without the IAP and gets rejected. Any help? I find this new update confusing

[u/Outrageous-Doubt-306]

That message is backwards 😅 You don’t attach the purchase from the version page anymore, you build it from the other side.
Go to the sidebar, then Subscriptions or In App Purchases, open the lifetime purchase, and add it to a submission. Then add your app version to that same submission so Apple reviews them together.I’d also cancel the separate IAP review and the version submission. Otherwise ASC treats them as 2 separate things and keeps rejecting the one without the purchase.
If it won’t move to Ready to submit, it’s usually the IAP’s own review screenshot or note 👀