The WME team is testing revert risk agnostic on Lift Wing, and they reported a high number of HTTP 400s related to two use cases:
------------------------------------------
* Example payload:
```
{
"rev_id": 133170407,
"lang": "ru"
}
```
* Response from Lift Wing:
```
{"detail": "The necessary features cannot be obtained from the MediaWiki API. It can be the revision, parent revision, page information, or user information. This could be because the data does not exist or has been deleted."}
```
* More info: [[ https://docs.google.com/document/d/19BV9rEyjOo9v_HFV6Dl4VO6PfNTgwJ5P53UGOvQfOvo/edit | doc ]]
------------------------------------------
* Example payload:
```
{
"rev_id": 319465,
"lang": "ha"
}
```
* Response from Lift Wing:
```
{
"error": "Unsupported lang: ha."
}
```
* More info: [[ https://docs.google.com/document/d/1k5UEUtpIiQYiNbD5hBjpKaGKozqGCCU-S4-1yfzJXQw/edit | doc ]]