Java POST to /api/v2/architect/routing/edges returns 422 on payload validation

We’re pushing a new ROUTE_CONFIG through the DEPLOY_PIPELINE with a Java REST client, but the atomic POST to /api/v2/architect/routing/edges keeps returning a 422 error. The EDGE_ID and FAILOVER_STRATEGY directives look correct, yet the gateway validation rejects the traffic pattern matrix right before the automatic edge sync triggers. The LATENCY_THRESHOLD checking pipeline just hangs. Don’t know which schema constraint is blocking the deployment.

HttpResponse<String> res = Unirest.post("https://acme.mygen.com/api/v2/architect/routing/edges")
 .header("Content-Type", "application/json")
 .body("{\"edgeId\": \"e_9921\", \"trafficPattern\": [{\"geo\": \"US_EAST\", \"weight\": 0.8}], \"failoverStrategy\": \"active_passive\"}")
 .asString();

{
 "type": "ROUTE",
 "name": "Edge-Fix",
 "configuration": {
 "failoverStrategy": "PRIORITY",
 "latencyThreshold": {
 "value": 200,
 "unit": "MILLISECONDS"
 }
 }
}

Cause: 422 usually screams schema mismatch. Your payload is missing the type discriminator, and the latencyThreshold object requires the unit enum. The gateway rejects it before it even hits the deployment pipeline.

Solution: You mentioned an atomic POST. If you’re doing a partial update, the path parameter needs to match the body ID exactly. The 422 can also trigger if the failoverStrategy is set to ROUND_ROBIN but you haven’t defined the capacity weights. The validator catches that inconsistency.

Double check your Jackson annotations too. Sometimes @JsonInclude(JsonInclude.Include.NON_NULL) causes issues if the API expects an empty object instead of a missing field. I ran into this last sprint with the data action schema. The API is strict about empty objects versus nulls.

The latencyThreshold value has to be an integer. If you’re sending a float like 200.5, the schema validator might reject it depending on the version. Cast it to int in Java before serialization.

Check the failoverStrategy enum values. PRIORITY works. RANDOM works. If you typo that, it fails. The API logs will show the specific field violation if you enable debug mode on the client.

I’ve seen this trip up teams moving from UI config to code. The UI fills in the defaults, the API doesn’t.

Just push the corrected payload.