Summary
Feature attribute tables cannot be used directly with the Add XY Data tool in ArcMap. The data must first be exported to a standalone table.
Procedure
- Add the feature class containing the XY data to ArcMap.
- Right-click the layer in the Table of Contents and select Open Attribute Table.
- Select Options > Export from the table window.
- Enter the name and location of the new table.
- Select the export format. The table format options are Personal geodatabase, dBASE, Info, SDE or Text.
- Click OK.
- Add the exported table to ArcMap.
- Select Add XY Data from the Tools menu.
- Select the exported table from the 'Choose a table from the map...' pulldown menu.
- Select the X and Y fields that contain the coordinate information.
- Define the Spatial Reference for the event layer.
- Click OK.