This route is documented in Raptor Maps public Postman Collection found here

PATCH Farm Anomalies allows you to update the status and/or priority of one or more anomalies in one call. For example, you might want to batch update anomaly states after verifying anomalies against internal data.

The example below demonstrates a payload that updates anomaly with ID "123" to lifecycle status 2 ("Verified"), and priority 2 ("Medium") as well as updating the lifecycle status of anomaly "456" to 1 or "Detected".

[
    {
        "anomaly_id": 123,
        "life_cycle_status_id": 2,
        "priority": 2
    },
    {
        "anomaly_id": 456 ,
        "life_cycle_status_id": 1
    }
]

A list of valid lifecycle status ID values is on this glossary page ; priority values in this section of the glossary.