How do you handle error scenarios and retries in an Appian Process Model when an integration fails?

In Appian, integration failures can be handled using exception flows, error handling subprocesses, and smart service configurations.

For retry handling, we can:

Use exception flows on integration smart services.
Store error details in process variables for tracking.
Configure retries using timers or looping gateways.
Send notifications/emails to support teams if retries fail multiple times.
Use write-to-database logging for failed transactions.

For example, if an external API is temporarily unavailable, the process can route through an exception flow, wait for a few minutes using a timer event, and retry the integration call. If the integration still fails after defined retries, the process can escalate the issue to the admin/support team.

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