WFM Schedule API 400 Error During Zendesk-to-GC Migration

Genesys Cloud WFM
1

Looking for advice on mapping Zendesk availability windows to Genesys Cloud WFM schedules. The POST request to /api/v2/wfm/scheduling/schedules fails with a 400 Bad Request, citing an invalid time format in the payload. The migration script generates the JSON below, which works in our Zendesk sandbox but breaks in GC.

{
 "name": "Support_Team_Alpha",
 "timeZone": "Europe/Paris",
 "scheduleEntries": [
 {
 "date": "2023-10-27",
 "startTime": "09:00:00+02:00",
 "endTime": "17:00:00+02:00",
 "agentId": "agent-uuid-123"
 }
 ]
}
2

Make sure you validate the date format against Genesys Cloud’s strict ISO 8601 requirements, as the migration script is likely outputting a format that Zendesk accepts but the WFM API rejects. The error “invalid time format” usually points to a missing timezone offset or an incorrect separator in the date field within the scheduleEntries.

From an AppFoundry partner perspective, integrating external systems like Zendesk often reveals these schema mismatches early in the migration phase. Genesys Cloud expects the date to be in YYYY-MM-DD format for daily schedules, but if you are submitting recurring or specific time-bound entries, the API might be interpreting the payload incorrectly due to implicit timezone assumptions.

Here are the steps to resolve this:

  • Verify Date Format: Ensure the date field is strictly YYYY-MM-DD. If the payload includes time components, they must be in ISO 8601 format with a timezone offset (e.g., 2023-10-27T08:00:00+02:00).
  • Check Timezone Consistency: The timeZone field in the root object should match the offset in the schedule entries. Genesys Cloud normalizes all times to UTC internally, so mismatches here cause validation failures.
  • Inspect the Payload: Use the Genesys Cloud API Explorer or Postman to test a minimal valid payload. Compare the successful response with your migration script’s output.
  • Handle Recurring Schedules: If the schedule is recurring, ensure you are using the correct endpoint for recurring schedules (/api/v2/wfm/scheduling/recuringschedules) instead of the daily schedules endpoint.

Example of a valid scheduleEntries object:

{
 "date": "2023-10-27",
 "start": "08:00:00",
 "end": "17:00:00",
 "state": "ADHOC"
}

If the issue persists, check the API rate limits, as high-volume migrations can trigger temporary validation errors due to server-side throttling. This is a common pitfall in large-scale integrations.