Node Lambda dropping Genesys Cloud webhooks on 502

NICE CXone API & Integrations
1

My Node.js handler throws a 502 when JSON.parse(event.body) hits a malformed payload from GC. The event log shows the webhook fired, but the retry policy isn’t kicking in like it should. Here’s the snippet:

exports.handler = async (event) => {
 try {
 const body = JSON.parse(event.body);
 // process
 } catch (e) {
 return { statusCode: 500, body: 'bad json' };
 }
};

GC expects a 2xx to stop retries. If I return 500, it retries forever. If I return 200 on error, I lose the data. How do I signal GC to move this to the dead letter queue instead?