A label that has favourite forms associated with it cannot be deleted.
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Filtering your favorite forms
Rw step
Navigate to Forms Library and open the Labels tab. Hover over the now empty label and click the trash can icon to Delete the label.
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Deleting a favorites label
Rw step
A confirmation pop-up window will appear. Click OK to permanently delete the label.
Note
If there are still forms associated with this label, an error message will appear. Return to Step 1 and check if all forms have been removed from the label.