Implement a Column bank account wire drawdown request and handle FedWire Fedline Advantage return messages

Steps

1. Authenticate to Column's API using your API key and create or retrieve the originating account from which you will send the drawdown request
2. Construct a wire drawdown request payload specifying the beneficiary bank's routing number, the beneficiary account, the amount, the drawdown reason, and any optional memo text allowed by Column
3. Submit the drawdown request and capture the Column wire transfer ID; poll the wire transfer status endpoint or consume the wire transfer webhook to track progression through PENDING, SENT, and SETTLED states
4. If the counterparty bank returns the drawdown (RETURN state), parse the return reason code from the wire transfer object — Column surfaces the Fedwire return reason in a structured field
5. For returned wires, reverse the ledger entries you posted on initiation and notify the originating business of the return reason and any re-submission eligibility
6. Reconcile settled wires daily against Column's account statement endpoint to detect any discrepancies between your ledger and Column's books