Data Type Text (text field: A type of field whose content is text. Examples include the Task Name and Email Address fields. This field can contain up to 255 characters.)
Entry Type Entered (entered field: A field in which you may type or edit information. This is in contrast with a calculated field, in which Project calculates and enters information.)
Description The Code field contains any code, abbreviation, or number you want to enter as part of a resource's information.
Best Uses Use the Code field in a resource view when you want to display, filter, sort, or edit any special code you might be using to identify resource information.
Example Your company uses cost center codes for resources in projects. In the Resource Sheet, add the Code field and enter the cost center codes for each of your resources. You can then filter the resources to show only those resources assigned to a certain cost center.