IAP verifyReceipt in Sandbox with … | Apple Developer Forums

IAP verifyReceipt in Sandbox with Consumable productId met 21003

I met a strange problem , when i test IAP verifyReceipt via Server

I did it as this doc says
https://developer.apple.com/documentation/storekit/in-app_purchase/validating_receipts_with_the_app_store

May i have your apply please

but when i send http request to https://sandbox.itunes.apple.com/verifyReceipt
with

Code Block json{
 "receipt-data":"MIJTCwYJKoZIhvcNAQcCoIJ***bSEbKtXJq9EkFmyI
}

Code Block json
{
"receipt-data":"MIJTCwYJKoZIhvcNAQcCoIJ***bSEbKtXJq9EkFmyI
}

I receive http answer like this

Code Block json{
    "environment": "Sandbox",
    "status": 21003
}