Advanced API - frequent "success": false response

Hello, we have been successfully using the Advanced API for over a year to create automated accesses for our vacation home. We use a Smart Lock 2.0, Opener and Bridge.

From time to time it happens that the response to a request looks like this:

{
“detail”: [
{
“smartlockId”: XXXXXXXXX,
“success”: false,
“errorCode”: “ff”,
“id”: “60de8f428519f25ac834d901”
},
{
“smartlockId”: XXXXXXXXX,
“success”: false,
“errorCode”: “ff”,
“id”: “60de8f428519f25ac834d8fe”
}
],
“type”: “AuthCreation”,
“requestId”: “60de8f428519f25ac834d8fd”,
“success”: false
}

Currently, we delete the requests and create new ones until we receive a successful response for both requested devices.

Unfortunately, the number of unsuccessful webhooks has been increasing lately. Is it known why this occurs and how it can be optimized? The error code unfortunately points to an unknown error. Sometimes the lines of the “errorCode” are missing in the webhooks.

Furthermore, today I also got a request that failed for a device, but returned true as success.

{
“inviteCode”: “MQS-HJF-GBX”,
“detail”: [
{
“smartlockId”: XXXXXXXXX,
“success”: false,
“id”: “610b7e63396b57c2475a7a5c”
},
{
“smartlockId”: XXXXXXXXX,
“success”: true,
“id”: “610b7e63396b57c2475a7a5e”,
“authId”: XXXXXXX
}
],
“type”: “AuthCreation”,
“requestId”: “610b7e63396b57c2475a7a5b”,
“success”: true
}

Also the first time in the last week a webhook was lost. What is the current rule when the webhook recipient server is unreachable? Is there an attempt to resend the message and if so how often and in which interval?

The “XXX…” are not part of the response its just a replacement for the numbers.

Thank you!