# Support playbooks

- Updated May 2026

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.
- [PDF invoice readiness for e-invoicing](/resources/support-playbooks/pdf-invoice-readiness): How to check whether a PDF invoice can become structured e-invoice data.
- [Source data readiness for e-invoices](/resources/support-playbooks/source-data-readiness): What to check before turning ERP, PDF, or spreadsheet invoice facts into structured XML.
- [Invoice attachments and service descriptions](/resources/support-playbooks/invoice-attachments-service-descriptions): How to decide what belongs in structured e-invoice data and what can remain in an attachment.
- [API and automation error messages](/resources/support-playbooks/api-and-automation-errors): Common integration errors translated into customer action steps.
- [Automating PDF-to-E-Invoice Conversion at Scale via API](/resources/support-playbooks/pdf-to-einvoice-api-automation): Step-by-step developer integration playbook for automated, asynchronous e-invoice generation via the API.
- [Programmatic Handling of E-Invoice Schema Errors](/resources/support-playbooks/programmatic-schema-errors-guide): How to write reliable retry, validation, and error parsing logic for API integrations.