Hi, I was trying to create parent and child records using SObject Tree REST API but when the JSON request contains 2 duplicate child records, it throws a generic exception as below.

ERROR:

UNKNOWN_EXCEPTION message: An unexpected error occurred. Please include this ErrorId if you contact support: 810374692-4687 (173351053) errorCode: UNKNOWN_EXCEPTION

Even after throwing the exception, records are getting created in Salesforce. An external application is calling this API to create orders in Salesforce.