Running the Q4_EU_Push campaign here in Berlin 
and it stops dead with PREDICTIVE_ROUTING_CONSTRAINT_VIOLATION on Architect v2023.11. Queue settings don’t match matrix, but WEM override keeps clashing with it. Pro tip! Check capacity thresholds before scaling. You’ll get it running smooth! 
[screenshot of error panel] Is the max_concurrent_campaigns parameter overriding default WFM rules? Console shows zero active agents despite green status. Logs just dump 429 Too Many Requests when sync tries to pull shift data
var update = new CampaignUpdateRequest { Weight = 5 };
await platformClient.CampaignsApi.PostCampaignsCampaignIdAsync(campaignId, update);
Docs say: “Constraint violations occur when matrix overrides conflict with queue capacity.” Why does not work? You’re passing decimals. Check your JSON payload before hitting the endpoint.