The picklist values that can be selected when editing a Salesforce Object are restricted based on the record type.
While fairly straight forward in concept I've found I often have to scratch my head for a minute before I remember where to configure this.
- App Setup
- Customize for Standard Objects or Create for Custom Objects
- Select Object in question
- Record Types
- Click the Record Type Label for the Record Type
- Click Edit under Picklists Available for Editing
- Map the required Picklist Values