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I tried multi sandbox account and read this post: https://forums.developer.apple.com/thread/130456We have the same problem for some accounts: DID_FAIL_TO_RENEW and the expiration_intent = 4 (The product was not available for purchase at the time of renewal.)While if we tried a new account or simply buy the goods manually, it works and gives us a new transaction id.Because of the experience, I can't test the auto subscription. I read the document and it said the transaction id is unique for buying and renewal, but I never see new transaction-id except manually buy.Is it a regular performance?