Here's my tricky question
In my project some integration activity is going on where integration takes place between java and salesforce. Records of a custom object are sending from Java to salesforce, they are performing only insert operation from their side. So I have to handle the data for updating records, for this I wrote a trigger. Trigger is working fine as per the business requirement and have tested it in salesforce. But the issue is it's not handling the data as expected while sending records from java to salesforce. It's creating new records in salesforce instead of updating the existing records.
There is now SOAP or REST code from salesforce, we just handed over the endpoint URL and some other needful things. Can you guys please suggest me from where the issue is occuring from?.