To edit a Prefix or Next Number, place your cursor in the appropriate field and type your changes. Then, click "Close". Your changes will be added to the Geodatabase Synchronization Setup and can be viewed by selecting the feature class in the tree and clicking the "+" next to the feature class. A list of the auto-numbers along with spatial relationships will be displayed.Note: You cannot edit the grayed-out fields on this form. If you need to change any of these fields, you'll need to remove the auto-numbering field and recreate it.