# Support playbooks

Plain-language help for review workflows, API errors, and support handoffs.

## Support playbooks

Plain-language help for review workflows, API errors, and support handoffs.

## Articles

- [Why invoices need review](/resources/support-playbooks/why-invoices-need-review): Why human review is part of reliable e-invoicing conversion.
- [API and automation error messages](/resources/support-playbooks/api-and-automation-errors): Common integration errors translated into customer action steps.