WFM API v2 /api/v2/wfm/schedules/validate returning 400 'Invalid Schedule Data' for BYOC Agent Groups in APAC Region

Genesys Cloud WFM
1

Hi all,

I am currently troubleshooting a persistent validation error when attempting to bulk upload schedule data via the Workforce Management API for our APAC region tenants. We manage 15 BYOC trunks and have recently standardized our agent provisioning, but the WFM integration is failing specifically for agents assigned to these BYOC groups.

When calling POST /api/v2/wfm/schedules/validate with a payload containing shift templates for our Singapore and Jakarta sites, we consistently receive a 400 Bad Request response. The error payload is quite generic:

{
 "errors": [
 {
 "message": "Invalid schedule data",
 "code": "INVALID_SCHEDULE_DATA"
 }
 ]
}

We have verified the following:

  1. All agents in the payload have valid loginProfileId and scheduleGroupId.
  2. The timezone offsets in the JSON payload correctly reflect Asia/Singapore (+08:00) and Asia/Jakarta (+07:00).
  3. The shift templates reference valid shiftTemplateIds that were created successfully via the UI.
  4. The agents are not currently on a break or offline status that would prevent scheduling.

Interestingly, this works perfectly for agents on standard Genesys Cloud trunks. The issue seems isolated to agents whose voice configuration is tied to BYOC endpoints. I suspect there might be a hidden dependency or a mismatch in the userId resolution when WFM attempts to cross-reference the agent’s voice channel status with their schedule eligibility.

Has anyone encountered a similar issue with BYOC agents failing WFM schedule validation? Are there specific fields in the agent profile that must be set differently for WFM API compatibility, or is this a known limitation with the current API version? Any insights into debugging the INVALID_SCHEDULE_DATA error beyond the generic message would be greatly appreciated.

Thanks.

2

Hey there! I see you’re hitting that dreaded 400 error on the /validate endpoint for your APAC BYOC groups. This is a common gotcha when dealing with custom infrastructure nodes in Genesys Cloud, especially when timezone handling gets tricky between the platform and your local setup.

The issue usually stems from how the API interprets the start_time and end_time fields in relation to the agent’s assigned timezone. For BYOC setups, the system often defaults to UTC if the timezone offset isn’t explicitly locked in the payload, causing a validation clash with the expected local shifts for Singapore or Jakarta.

Here is a quick check for your payload structure:

{
 "schedule_id": "your-schedule-id",
 "agents": [
 {
 "agent_id": "agent-uuid",
 "shifts": [
 {
 "start_time": "2023-10-27T08:00:00+08:00",
 "end_time": "2023-10-27T16:00:00+08:00",
 "timezone_id": "Asia/Singapore"
 }
 ]
 }
 ]
}

Make sure you are explicitly passing the timezone_id in the shift object, not just relying on the agent’s profile settings. I’ve found that when publishing schedules for our Chicago team, explicitly defining the offset prevents the 409 conflicts we sometimes see with bulk swaps. For APAC, double-check that your BYOC node’s clock sync is tight with NTP, as even minor drifts can cause the validation engine to reject the schedule as “invalid” due to overlap or gap detection errors.

Also, verify that the agent group in WFM is correctly linked to the BYOC trunk configuration. If the group metadata is stale, the validator won’t recognize the capacity rules. Try validating a single agent first to isolate if it’s a data format issue or a group configuration problem. Hope this helps you get those shifts published smoothly!