Transaction History

I am trying to lookup a XUMM transaction that is almost 60 days old in our system. We are using the XUMM API and have the response payload with Transaction ID, Payload Response UUIDv4 and Reference Call UUIDv4. When I try to retrieve the Payload UUID or Transaction ID I get a response ""code":813".

Is it possible using the API to retrieve a past transactions?

The 2 endpoints I have tester are

https://xumm.app/api/v1/platform/payload/$plid
https://xumm.app/api/v1/platform/xrpl-tx/$txid