genesyscloud rejects the scheduling payload on the IVR maintenance endpoint whenever the fallback_greeting directive crosses the telephony gateway constraints. The validation pipeline skips the dependency verification step entirely. We’ve got an atomic POST to /api/v2/ivr/maintenance-windows that bundles the flow_id reference, a downtime_duration matrix, and the fallback audio URL. Response keeps hitting a 400 Bad Request about missing capacity impact flags. The schema expects a max_concurrent_maintenance count that we’re pulling from the external change management callback, yet the SDK throws a ValidationError before the traffic rerouting trigger even fires. Audit logging tracks the scheduling latency fine, but the request dies at the gateway level whenever the maintenance_window_start timestamp overlaps with an active scaling event. We’re passing the JSON exactly as the docs show. Atomic registration fails on the first dependency check. Error trace points to the fallback_greeting field expecting a reference ID string instead of the raw directive object. Swapped the URI for a static S3 link already. Gateway still returns a 400 with validation_failed: telephony_matrix_exceeded. Capacity impact checking pipeline ignores the reroute_enabled flag. Callers just drop when the window opens. Here’s what the Python client is actually sending.
payload = {
"flow_id": "a3f8c2b1-9d7e-4f1a-b8c6-2e5d9f0a1b3c",
"downtime_duration": {"hours": 2, "buffer_minutes": 15},
"fallback_greeting": {"type": "audio", "uri": "https://cdn.example.com/ivr/maint.wav"},
"max_concurrent_maintenance": 1,
"capacity_impact": {"threshold": 0.85, "reroute_enabled": True},
"maintenance_window_start": "2023-11-15T02:00:00Z",
"callback_url": "https://hooks.internal/cm/sync"
}
client.ivr_api.post_ivr_maintenance_windows(body=payload)
Cause: The 400 error hits because the fallback_greeting object lacks the mandatory type discriminator required by the IVR schema at /api/v2/ivr/maintenance-windows. The JS SDK generates this field as any in the MaintenanceWindow model, which means TypeScript skips validation and lets the malformed shape pass straight to the wire. The gateway rejects the payload since it can’t resolve the audio asset without the explicit wrapper, causing the dependency verification step to abort. You’re likely sending a raw string or a nested object that doesn’t match the directive definition. The validation pipeline drops records when the directive shape doesn’t align with the telephony gateway constraints. Solution: Construct the fallback greeting using the strict directive interface before posting. Don’t rely on the auto-generated type inference here. You’ll need to set the type property to audio and provide the streaming URI in the value field. This forces the serializer to emit the correct JSON structure that the endpoint expects. The SDK method postIvrMaintenanceWindows requires the full model instance. The PureCloudPlatformClientV2 instance handles the serialization, but if the input type is wrong, the JSON.stringify output won’t match the schema. The type definition in the SDK needs a patch to enforce the directive interface. Make sure the flow_id reference is also valid.
const client = new PureCloudPlatformClientV2.ApiClient();
const ivr = client.IvrApi;
const maintenanceWindow = new PureCloudPlatformClientV2.MaintenanceWindow();
maintenanceWindow.fallbackGreeting = {
type: 'audio',
value: 'https://storage.example.com/fallback.mp3',
playMode: 'streaming'
};
maintenanceWindow.flowId = 'valid-flow-id';
await ivr.postIvrMaintenanceWindows(maintenanceWindow);
HTTP 400 Bad Request: Validation failed. The fallback_greeting directive is missing the required type wrapper. You’re spot on about the JS SDK dropping the discriminator. The gateway actually demands a strict object shape here. Pushing that through PureCloudPlatformClientV2 just masks the null values until the request hits the wire. You’ll need to explicitly set the type field to audio and wrap the URL properly. Payload looks clean locally. Wire format is completely different.
{
"name": "Weekly IVR Maintenance",
"flow_id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"fallback_greeting": {
"type": "audio",
"uri": "https://your-bucket.s3.amazonaws.com/maintenance.wav",
"transcription": {
"enabled": false
}
},
"schedule": {
"recurrence_type": "weekly",
"days": ["MON"]
}
}
Skip the dynamic schema validation on your end. The EventBridge bridge will choke on malformed IVR events anyway if the asset type isn’t locked down. Don’t bother with runtime checks. Just hardcode the discriminator. Make sure your bearer token carries the admin:ivr:maintenancemode scope too.
The fallback_greeting object usually drops the discriminator if you rely on the SDK’s default serializer. It assumes you’re lazy-loading the asset. The gateway doesn’t care about your intentions. It wants the explicit wrapper.
Just pushed a fix to my SvelteKit proxy handler. The 400s stopped immediately. Here is the payload shape that actually sticks.
- Create the maintenance window object.
- Force the type field to audio.
- Pass the full HTTPS URL to the url property.
const maintenancePayload = {
flowId: 'your-flow-id-here',
fallbackGreeting: {
type: 'audio', // Mandatory discriminator
url: 'https://your-bucket.s3.amazonaws.com/maintenance.wav'
},
startTime: '2023-10-27T14:00:00.000Z',
duration: 3600
};
await platformClient.IvrApi.postIvrMaintenanceWindows(maintenancePayload);
Don’t forget to check the OAuth scope. You’ll need api:ivrmaintenancewindows:write. The proxy usually fails silently if that’s missing. Annoying.
Aren’t you routing the maintenance window payload through the Frankfurt data center?
Cause: The validation pipeline rejects payloads that bypass the Article 25 data protection checks. The SDK usually skips the consent wrapper during serialization.
Solution: Add the explicit type: "audio" field. It’s mandatory for regional residency compliance.
{"fallback_greeting": {"type": "audio", "url": "..."}}
The gateway throws a 400 when the metadata cache… [log truncated]