Why isn't my Jira priority field being set via SNS and Lambda?

JSM Development JSM Cloud
1

Hi everyone,

I’m integrating AWS GuardDuty with Jira Service Management. My Lambda function maps GuardDuty severity (1–8) to Jira priority codes (P1–P4) and sends an SNS message with a payload that includes a “Priority” field. However, Jira doesn’t seem to pick up or display this priority. Everything else works fine, creates alerts with description etc.

Here’s my simplified mapping function:

function mapSeverityToPriority(severity: number): string {
  if (severity < 4) return "P4";
  else if (severity < 6) return "P3";
  else if (severity < 8) return "P2";
  else return "P1";
}

Payload:

{
  "Priority": jiraPriority,
  // ...other fields...
}

Could it be a configuration issue on the Jira side, or is there something else I’m missing in the payload format?

Thanks in advance for your help!