The following items are considered 'AcroForm' fields, and are flattened before the authoring phase:
- Text fields
- Image fields
- Checkboxes
- Radio buttons
- Drop-down lists
- List boxs
- Buttons
- Date fields
- E-signature fields
- Barcodes
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Support and Troubleshooting
Document or Field flattening (in the context of Acrobat Sign) is essentially the process of taking an uploaded PDF document and passing it through a PDF print driver. This process has a few benefits:
One of the first troubleshooting steps for a failed PDF upload would be to run the PDF through a print driver (flatten it) and then try the upload again.
The Field flattening feature automatically flattens the PDF upon upload, resolving many upload issues before they become problems that generate errors and slow the sender's progress.
Field flattening is available for individual, team, and enterprise license plans.
The feature can be enabled at the account and group levels.
Procedurally, Field flattening takes place before automatic field detection, so customers who want to take advantage of automatic field detection with PDF files containing pre-filled fields may do so.
The prefilled content is printed into the document, and then field detection will identify any remaining field candidates based on the form geometry.
The following items are considered 'AcroForm' fields, and are flattened before the authoring phase:
These field types are not flattened: