I have gone through this document. I am still receiving an empty array. Is there something else which could stop? Is there a set of logs that I can enable from App Store Connect that will tell me what is failing?

Apologies for the duplicate upload - I received an error - so resubmitted. The section called 'In-App Purchases and Subscriptions" now has a Reference Name, Product ID and Type filled in following your advice. The status of "Ready to Submit" still remains. There is one localization called "English (U.S.)" - it's status is 'Prepare for Submission'. Looking at the question mark - it means that the localization has been created, but it is not yet submitted to App Review - this is ok?

Thank you for your reply. You are correct, this was not completed. I have completed, re-compiled and immediately run my project, I still receive an empty array. Do I need to wait 30 mins for Apple's backend systems to sync?

Thank you for your reply. You are correct, this was missing. The product ID has been added. I have just compiled and run my project and the array is still returning empty. I have resync'd the storekit configuration file - although this hasn't changed anything. Do I need to give it 30 mins to synchronise before it should work?