Network failure and idempotence

The Toast loyalty integration API will retry a request if it does not receive a response from your API implementation (for example, because of a network failure). The Toast API does not indicate that the request is a duplicate of an earlier transaction request. When the Toast loyalty integration API sends a duplicate request, your API implementation must return a cached, duplicate response containing the result of the operation.

Toast's retry logic varies by transaction type:

• If your endpoint returns a failure response to a LOYALTY_REVERSE request, the Toast loyalty integration API will retry the request and will send the same Toast-Transaction-GUID as the original request.

• If your endpoint returns a failure response to a LOYALTY_ACCRUE request, the Toast loyalty integration API will retry the request and will send a different Toast-Transaction-GUID than the original request.

• If your endpoint returns a failure response to a LOYALTY_REDEEM request, the Toast loyalty integration API will not retry the request.