Java IVR deployment script failing on version hash mismatch during PUT to /api/v2/flows

Encountering a 409 Conflict during programmatic deployment of flow definitions via PUT to /api/v2/flows/{flowId}. The pipeline parses the JSON, validates against the Flow API schema, and executes the request. Validation succeeds until the version hash check. The API returns a 409 Conflict despite the If-Match header matching the etag retrieved from the initial GET request. The conflict occurs specifically when a child node references a modified routing group ID.

RequestBody body = RequestBody.create(jsonFlow.toString(), MediaType.get("application/json"));
Request request = new Request.Builder()
 .url("https://myorg.mygenesyscloud.com/api/v2/flows/12345")
 .header("If-Match", etagFromRepo)
 .put(body)
 .build();

The deployment process includes a rollback handler that intercepts 400 and 409 responses, reverting to the last known good JSON configuration. Upon successful deployment, the pipeline invokes the Flow Analytics API for a dry-run simulation and dispatches a Slack webhook payload containing the flow name and updated version number. Timezone offset drift has been ruled out. The OkHttp client returns a raw 409 response body without a detailed stack trace.

Does the Flow API require fetching the current flow definition, merging local changes, and re-submitting to satisfy etag validation? Alternatively, does the If-Match header require a specific format beyond the standard etag string? Seeking clarification on the expected etag behavior for programmatic node updates.

The 409 conflict typically occurs when the JSON body version integer drifts from the server state, rather than a simple header mismatch. The platform validates both the If-Match etag and the explicit version field inside the payload. Your Java builder likely strips the version during toJson() serialization or you are hardcoding it to 1. You must pull the active definition first, extract the getVersion(), then inject it back before executing the PUT. The PureCloudPlatformClientV2 manages the etag header automatically when you pass the hydrated object.

Flow existing = platformClient.getFlows().getFlow(flowId, null, null, null, null).getEntity();
int currentVer = existing.getVersion();
flowJson.put("version", currentVer);
Flow updatedFlow = gson.fromJson(flowJson.toString(), Flow.class);
platformClient.getFlows().putFlow(flowId, updatedFlow, null, null);

Verify your OAuth scope configuration as well. The flow:read scope is insufficient for deployment pushes. You require flow:write or flow:admin attached to the token. When the JSON payload exceeds 2MB, the API gateway triggers a 413 rejection before the version validation executes. Omit the x-genesys-override-accept-version header unless you are intentionally bypassing schema validation. The etag matching logic within the Java SDK requires the exact integer from the response payload, not a string cast. Execute a raw curl request first to isolate the SDK serialization defect.