Why Idempotency Matters in Sportsbook Wallet Callbacks

Avoid duplicate debits and credits with clear transaction processing and recovery design.

The failure mode

A network timeout can occur after a transaction is processed but before the caller receives the response. Blindly retrying can duplicate a financial operation.

An idempotent workflow

Assign each financial request a stable unique identifier. Persist the result and return the prior outcome if the same identifier arrives again.

Reconciliation

Compare the merchant ledger against order and transaction records; investigate mismatches with traceable audit logs.

Testing

Simulate duplicate requests, delays, insufficient balance, and out-of-order callbacks before launch.

For a more complete implementation overview, see the FB Sports technical guide.

This is general engineering guidance; confirm provider-specific behavior against the current documentation.