All integrations allow you to create documents from your Airtable data and attach them back to Airtable. The Generation Link integration and the Automation Script are identical in their features however the Native App does have some slight differences (see comparison below).
The Native App integration works by using an Airtable app that you can install in your base. You can find the app in the Airtable Marketplace. The app provides you with an interface within Airtable for generating documents from your records. Learn more
The Generation Link integration uses a special URL to generate your document. This URL is created dynamically by a formula in either a Formula field or Button field. When the link or button is clicked, Documint creates a document using the template id and record id provided in the URL. Learn more
Field names in Airtable are converted to snake-case in Documint. This means your variables need to be the snake-case version of the field name. For example, if a field in Airtable is named Order Total, its variable name in Documint needs to beorder_total . Notice the space is replaced with an underscore and everything is converted to lowercase.