After you attach object data to a drawing object, you can edit the object data record or delete a record from an object.
To display and edit data for a drawing object
Select the object in your drawing.
Tip: If the drawing contains more than one object in the same location, press Ctrl while you select the object. This turns on the AutoCAD Map 3D toolset cycle feature, which allows you to select each object at that location, one by one, as you click. Click until you select the object you want. Press Enter.
If the Properties palette is not open, right-click the object. Click Properties.
In the Properties palette, scroll to view the object data information.
To edit data, click the data to change and enter the new data.
To delete the current record from the selected object, click Delete Record.
If the object has more than one record from the selected table, click Next or Last to view a different record. If the object has records attached from more than one table, select a table from the Table list to view object data from that table. To delete object data for a different object, click Select Object and select the object.