Pushed the wfm schedule sync module to client prod org using genesys-cloud-sdk-js@3.88.0. The /api/v2/wfm/userschedule/bulk endpoint doing jack all. It’s rejecting the POST with a 422 Unprocessable Entity every time the payload exceeds 500 user records. The console logs show the request body matches the schema perfectly, timestamps are ISO 8601 format, and the OAuth token has the wfm:userschedule:write scope granted in the multi-org app settings. We’ve tried splitting the batch size down to 50 records just in case, but the 422 error still hits on the third batch. The response body returns a generic validation error pointing to line 1 column 0, which is completely useless for debugging. Checked the AppFoundry partner dashboard and the API rate limit counter is sitting at 12% usage, so throttling isn’t the culprit here. The client’s WFM tool is expecting a 201 Created response to trigger the downstream webhook, but the connection drops before that happens. This broke the shift handoff process for the night team in the EST timezone, causing agents to show up to empty queues for two hours yesterday. The SDK documentation mentions a maxBatchSize parameter, but passing that in the header doesn’t change the behavior at all.
Client is running Genesys Cloud version 24.2.0. The integration uses a dedicated service account for the WFM sync. We’re seeing this behavior only in the US2 region; the EU1 sandbox org accepts the same payload without throwing errors. The SDK method wfmApi.postWfmUserscheduleBulk is being called directly without any wrapper modifications. The error response doesn’t include a correlation ID, making it impossible to open a support case with the backend team. The client’s IT team is complaining about the latency spikes during the bulk upload window. This is blocking the release of the Q3 quality module update.
Logs show the rejection happens right after the handshake completes. The network tab reveals the request is sent with Content-Type: application/json, yet the server acts like it received garbage data.
{
"errors": [
{
"code": "invalid_request",
"message": "The request body could not be parsed.",
"path": "/api/v2/wfm/userschedule/bulk"
}
]
}
The payload structure uses the exact object definition from the swagger spec. Retrying with a fresh token didn’t fix it either.