Project automatically creates a default WBS code in the WBS field for each task. (See the beginning of this chapter for a description of WBS and the WBS codes.) The default WBS codes are identical to the outline numbers that Project generates (and that are stored in the Outline Number field).
You can display the WBS field in a table by inserting the WBS column. You can also view the WBS field on the Advanced tab of the Task Information dialog box. If your organization, or a client, requires a specific format for WBS codes, you can edit the codes in either of these places, replacing the Project outline number with your own WBS codes.
Editing the WBS field does not change the entry in the Outline Number field.