Hi @nhatnghetinh  We can do this from the Customization project - Workflow steps.

Here are the simple steps to achieve this.

1. Create a new condition to know if the CASE is Released or not
2. Add this condition in the OPEN Action, so that based on this condition OPEN button will be disabled after RELEASE the case.
3. Publish the package.

Please find the screenshots for reference.

Dear @Naveen Boga

Can we do Workflow steps on Automation Definitions for this case without having to do it on Customization project ?

Regards,

NNT

Hi @nhatnghetinh  Sorry, I am not sure about this and never checked from this screen.

Should be able to just view the State Diagram and that will show you all the ways you can go from closed back to open. Then just customize the workflow to disable those. I recently had to disable cases from reopening due to a email activity coming in after a case was already closed.