How to Fix Acrobat Showing an LM Button Instead of OK in PDF Forms
Question details
The user is attempting to create a print button in PDF form tools but encounters an 'LM' button instead of the expected 'OK' button in the interface.

- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Creating and configuring interactive form buttons within a PDF document.
- Observed behavior
- An 'LM' button is displayed instead of the 'OK' button, which typically happens when the document has been formatted as an Adobe Sign form rather than a standard interactive form.
Ensure you have full editing permissions for the PDF document, as restricted files may prevent you from modifying core form properties and layout types.
Revert the Document to a Standard Acrobat Form
Convert the Adobe Sign form back into a standard Acrobat form to restore normal button properties and the missing 'OK' button.
When you check 'This document requires signatures' during the initial form creation, Acrobat defaults to an Adobe Sign form format. This alters the standard button options and form controls, causing the 'LM' button to appear instead of 'OK' when you configure interactive button properties.
Launch Adobe Acrobat, open your PDF document, and navigate to the 'Tools' menu at the top. Select 'Prepare Form' from the list of available tools.
Look at the right-side configuration panel in the Prepare Form view and click on the 'More' option.
From the expanded dropdown menu, select 'Revert to Acrobat Form'. This action will immediately restore standard Acrobat form controls, bringing back the 'OK' button.

Create and Edit PDF Forms Hassle-Free with WPS Office
Avoid confusing Adobe-specific form conversion issues. WPS Office provides an intuitive, user-friendly PDF editor that lets you easily add interactive buttons, text fields, and signatures without unwanted format restrictions.
- 1. Open your PDF in WPS: Launch WPS Office and open your PDF document.
- 2. Access the Form tab: Navigate to the 'Form' tab on the top ribbon menu to reveal interactive form controls.
- 3. Add a Push Button: Select the 'Push Button' tool from the toolbar and click or drag on the page to place your button.
- 4. Set Button Actions: Double-click the newly created button to open its Properties. Go to the Actions tab to assign specific triggers, such as printing the document or opening a link.

Frequently Asked Questions
What exactly is an Adobe Sign form?
An Adobe Sign form is a specific PDF format optimized exclusively for Adobe's electronic signature service. It restricts and disables certain standard interactive form fields and buttons that are not compatible with the e-signing workflow.
Why did my standard PDF automatically convert to an Adobe Sign form?
This typically happens if you inadvertently check the 'This document requires signatures' box when initially setting up the form through the Prepare Form tool in Adobe Acrobat.
Can I switch back to an Adobe Sign form after reverting it?
Yes. If you decide later that you need Adobe Sign routing and tracking features, you can go back to the Prepare Form menu and re-enable the signature requirement.
Will reverting the form type delete my existing text fields?
No, reverting to a standard Acrobat form generally preserves your existing text fields, layouts, and data. It simply restores the standard properties menu and controls for those elements.




