I have one requirement, i want to display export button across the compliance workspace for all the tables present in the workspace, what are the ways? is it feasible?
You should be able to make the Export option available across Compliance Workspace lists, but first check whether the workspace already supports the standard export functionality.
Here's what I would suggest:
Open UI Builder and select your Compliance Workspace.
Open the affected list page and check the list component and its available actions.
Check Declarative Actions > List Actions to see whether the Export action is available.
If it's missing, verify whether your workspace list component supports exporting in your ServiceNow release.
If you need customization, use Declarative Actions rather than modifying out-of-box workspace components.
Also, make sure users have the appropriate table and field permissions before allowing exports.
I'd recommend checking the existing list configuration first. You may not need a custom button at all if the standard export action can be enabled.
