Thanks for posting your question here in the Community, Botcon.
I'm happy to provide some info about the reference field in your QuickBooks account.
In QuickBooks Payments, "RECON" stands for "reconcile," meaning you need to compare the transactions listed in your QuickBooks Payments account with the transactions in your bank statement to ensure they match and are accurately recorded in your accounting software; essentially, verifying that the money received through your payments platform is correctly reflected in your bank account.
The following linked article provides additional info about reconciling an account in QuickBooks Desktop.
Please feel free to reach back out if you have any other questions. I'll be here to lend a hand.