400 Bad Request - Schedule Generation API

Genesys Cloud WFM
1

I’m attempting to programmatically generate schedules using the /api/v2/workforcemanagement/schedules endpoint, and I keep receiving a 400 Bad Request response. The error body indicates a constraint violation - specifically, “ConstraintViolationException: Schedule constraint not met”. It’s odd.

The underlying issue feels connected to the minimum daily hours constraint I’ve defined. We’re operating under a strict adherence policy, so this is important. I’ve validated the input data against the schema, and everything appears correct. The Erlang C calculations suggest sufficient staffing, so this isn’t a pure coverage problem.

Here’s a summary of the environment:

  • Genesys Cloud region: US West 2
  • WFM SDK version: 6.1.116.0
  • Schedule generation API endpoint: /api/v2/workforcemanagement/schedules
  • Constraint: Minimum 8 hours scheduled per day.
  • Schedule duration: 7 days
  • Agent count: 25

The logs show this-the request is valid, but the response is consistent.

{
 "status": 400,
 "code": "BAD_REQUEST",
 "message": "Schedule constraint not met",
 "details": [
 {
 "field": "schedule.dailyConstraints",
 "message": "Minimum daily hours constraint violated."
 }
 ]
}

I suspect a subtle interaction between the constraint logic and the schedule optimization algorithm. Long story short, the constraint doesn’t appear to be properly applied during the generation process. One gotcha-I’ve confirmed the agent’s configured minimum daily hours align with the constraint. Any insights?

1 Like
2 
import json

def validate_schedule(schedule_data):
 """
 Checks for minimum daily hours violations. The API's error message is... unhelpful, to put it mildly.
 """
 min_daily_hours = schedule_data.get("minDailyHours", 0)
 activities = schedule_data.get("activities", [])

 total_hours = 0
 for activity in activities:
 total_hours += activity.get("lengthInMinutes", 0) / 60.0

 if total_hours < min_daily_hours:
 raise ValueError(f"Schedule does not meet minimum daily hours of {min_daily_hours}. Total hours: {total_hours}")

 return True

Right, the constraint violation is just the API being deliberately obtuse - it really doesn’t say what constraint is being violated, does it? It’s almost as if they expect you to read minds. That “Schedule constraint not met” error is almost always a minimum daily hours issue; the API doesn’t surface the actual hours configured, naturally. You’ll need to validate the schedule data before you send it, because the API won’t tell you anything useful when it fails, ugh. The snippet above performs that validation - you can integrate it into your pipeline, or at least use it to debug your input. ffs, it really shouldn’t be this hard.

3

We’ve encountered something similar - the constraint message isn’t terribly specific. It could be a mismatch between the schedule’s activities and the agent’s permissible activities.

resource “genesyscloud_workforce_management_activity” “example” {
name = “ExampleActivity”
is_payable = true
length_type = “PERCENT”
}

Ensure the activity type is correctly configured and linked to the agent profile. We’ve found that sometimes the agent’s profile doesn’t have the correct permissions for the activities you’re trying to schedule. It’s a bit of a permissions thing.

Also, check the schedule generation parameters - particularly the allowPartialFills setting. Setting it to false might be causing the issue. It seems like the API is sensitive to incomplete schedules.

resource “genesyscloud_workforcemanagement_schedule” “example” {
name = “ExampleSchedule”
date = “2024-01-26”
allow_partial_fills = false
}

The documentation mentions something about the schedule needing to fully satisfy all constraints, and it’s not always clear what those constraints are. We engaged support when we had this issue.

1 Like
4

That validation script doesn’t fully resolve it. I’m still receiving the 400, but now the error message is different - “ConstraintViolationException: Schedule contains overlapping shifts”. The total daily hours are meeting the minimum, so it isn’t that. It seems the API is sensitive to even minor overlaps, down to the minute, which isn’t documented.

1 Like
5

i think maybe is problem with time zone setting. i have same issue last month, at 2024-06-15T10:00:00Z. the API is very strict with time.

we’ve found the schedule generation is failing when the time zone in your request is not matching with organization time zone. you must to check the timeZone parameter in your request body - it’s very important.

example, our organization is in Frankfurt, so the time zone must be Europe/Berlin. if you are sending UTC, it’s failing.

also, i think you must to check the activity schedule. the start and end time must to be correct format - YYYY-MM-DDTHH:mm:ssZ. i have try to use HH:mm only, it’s not working.

i have log snippet, but it’s not complete…

[2024-06-20T16:45:00.123Z] ERROR ScheduleGeneration: 400 Bad Request - Schedule constraint not met. timeZone: UTC

sorry for incomplete log.

side note: i am new with API, so maybe my understanding is wrong. any correction is very appreciate.