sandbox verifyReceipt response status is 21005

We conducted a payment test in the sandbox environment.
At that time, the status code of the receipt information after the purchase of the subscription type item is completed is returned as 21005.

Could you tell us why status code 21005 is returned.

(Additional Information)
・ The payment test was conducted from 15:00 to 22:00 on December 3rd and still today also the same.
・ We have confirmed that consumable items had been purchased.

We are also dealing with this issue
We are also having the issue since the 3rd of December.
We have also been having this problem since December 3rd and it's preventing us from testing some new features in our app. Does anyone have any information on if this issue is being addressed?
I checked by Jenkins every 10 minutes.
I confirmed status code returned 21006 around 9 o'clock JST on today.
This problem was solved. :)
sandbox verifyReceipt response status is 21005
 
 
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