Policies array might be required - here's mine that works and it seems to be the only major thing missing from your payload. Also make sure it's a POST. Payload: { "alerts" : [ "P-1424086" ] , "policies" : [ ] , "filter" : { "filters" : [ { "operator" : "=" , "name" : "alert.status" , "value" : "open" } , { "operator" : "=" , "name" : "policy.type" , "value" : "config" } ] , "timeRange" : { "type" : "relative" , "value" : { "amount" : 1 , "unit" : "week" } } } , "dismissalNote" : "Test2" }
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