POSTing a deployment API call archives my project

Solved it!

In the body I simply needed to include the following:

{
“active”: true,
“identifier”: “https://kf.kobotoolbox.org/#/forms/aGNiRRxVx9Cbb7zqQtohiY”,
“version_id”: “vEf5cVkESUgLSNXuvwNjao”
}

Inferred from this thread

Hopefully this helps others! The KoboToolbox documentation could definitely do with more detail.