Attach Images and Files to a Form

External resources such as images or documents need to be processed separately from the JSON or XML request body. You can attach a file to an image field or a file attachment field, either when creating a form or when updating an existing form.

To attach an image or file to a form:

1. Upload the file using the Files endpoint (POST /v2/files). See Uploading a file for more details.
2. After the image has being uploaded, obtain the Id of the file.
3. Include the file Id as the value of the id property on the image field or file attachment field when creating or updating the form.