Best way to push updated callable windows back to Genesys Cloud without tanking the predictive multiplier? We’re running a ly Data Action to sync compliance flags from our external CRM into the contact list. The flow hits the POST /api/v2/outbound/contactlists/{contactListId}/contacts/bulk/update endpoint using a batch of 500 records. It works fine during quiet hours, but the moment the predictive dialer is actively pacing at 1.6x, the Data Action starts bombing out with a 422 Unprocessable Entity. Error payload says the contactListId doesn’t match the provided contact IDs, which is wild because the same JSON body passes validation at 2 AM. Queue depth drops to zero within seconds, abandonment rate hits 0%, and the campaign manager UI just spins. We’ve got the 2024-05-08 release locked in. The contact list has DNC scrubbing enabled and a strict ET callable window from 9 to 5. Running the sync during active dialing breaks the pacing engine. Staggering the batch size to 100 helps a bit, but the 422s still pop up randomly. The data action logs show the request times out right before the platform validates the callable window overlap. The API docs mention a concurrency limit for list mutations, but nothing about predictive lock states.
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The 422 usually means the contact is locked by an active interaction. You’ll need to filter out busy records before the API call. Wrap the update in a condition checking interaction.status isn’t ‘active’ or ‘ringing’. Dropping the batch size to 50-100 also helps avoid timing conflicts with the multiplier.
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