Implementing In-App Purchases for the first time

Hi,

I want to apply in app purchases in my app. I have set it up in xcode and on appstoreconnect, it is saying ready to submit.

I dont understand what i need to do now to connect the two. I have read i need to send my app for review for them to be reviewed, but i want to test the in app purchases first on test flight and on sandbox before i send my app for review.

Please can someone clarify for me and help me?

Implementing In-App Purchases for the first time
 
 
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