500 Internal Server Error
{
"error": {
"errors": [
{
"domain": "global",
"reason": "backendError",
"message": "Backend Error"
}
],
"code": 500,
"message": "Backend Error"
}
}
400 Bad Request
{
"error" : "invalid_grant",
"error_description" : "Code was already redeemed."
}
Second time I tried it worked