If the metadata extension you want to edit is non-reusable, you can change the value of the metadata extension and its properties. You can also promote the metadata extension to a reusable metadata extension.
To edit a non-reusable metadata extension, click the Metadata Extensions tab. You can update the Datatype, Value, Precision, and Description fields.
To make the metadata extension reusable, select Reusable. If you make a metadata extension reusable, you cannot change it back to non-reusable. The Workflow Manager makes the extension reusable as soon as you confirm the action.
To restore the default value for a metadata extension, click Revert in the UnOverride column.