cognigy-java-client is completely ignoring the guard clause verification pipeline when I push the transition payload, so step one is stripping down the JSON to just the bare flow ID and variable bindings. I’ve been wrestling with this atomic POST to /api/v3/flows/{flowId}/execute for three days now. Let me walk through the exact request I’m sending and why it keeps breaking.
Step one is constructing the base object. I’m using a standard HashMap for the payload because the cognigy-java-client mapper chokes on nested DTOs. I set flowId to "f_8a2b9c1d" and contextDepth to 12. The docs claim the engine auto-scales depth, but our instance caps it at 10, so that’s probably the first red flag. Step two is building the transition matrix. I’m passing nodeSequence as a string array: ["start", "validate_input", "route_to_intent"]. I figured the dialogue engine would handle the dependency resolution automatically. Step three is attaching the variable binding directives. I’m using Map.of("user.email", "test@example.com", "session.timeout", 300) to keep it flat.
HttpHeaders headers = new HttpHeaders();
headers.set("Content-Type", "application/json");
headers.set("Authorization", "Bearer " + token);
HttpEntity<String> request = new HttpEntity<>(mapper.writeValueAsString(payload), headers);
ResponseEntity<String> response = restTemplate.postForEntity(
"https://api.cognigy.ai/api/v3/flows/f_8a2b9c1d/execute", request, String.class
);
Step four is actually firing the request. That’s where everything falls apart. The response body just throws back a schema validation error about nodeSequence expecting an object instead of an array. I changed it to a map structure matching the dependency resolution format, but then the max context depth limit kicks in and hard fails. The webhook callback to my external session store never even fires because the state persistence trigger doesn’t run on validation failures.
I tried wrapping the transition in a try-catch block to catch the 422 Unprocessable Entity, but the actual error payload is just a generic {"code": "VALIDATION_FAILED", "message": "Transition schema mismatch"}. There’s no indication of which guard clause actually broke. I’ve been logging the latency on each retry, and it’s hovering around 450ms before the engine drops the connection. The audit logs on the Cognigy side show the request hit the ingestion layer, but the flow executor never picks it up for execution iteration.
Has anyone managed to construct a valid transition payload that actually passes the format verification? I’m at a loss with how the node dependency resolution expects the matrix to be formatted when the documentation just shows flat arrays. I’m going to try flattening the bindings object next, but I’m not holding my breath. The context depth limit is hardcoded to 10 on our instance anyway, so passing 12 was definitely part of the problem, but fixing that just shifted the error to the sequence matrix.