Based on the status of your information collection and whether the collection is changing substantially from any previous OMB approvals, there are several types of reviews for OMB numbers.
New Collection: Request for a new OMB Control Number of a collection that DoD has not previously used or sponsored.
Existing Collection in Use without an OMB Control Number: Request for collections DoD is already using or sponsoring that do not have an OMB Control Number.
Revision of a Currently Approved Collection: Request for approved collections that require substantive changes (e.g., major changes to the instrument, the burden imposed on the public, the collection frequency, or the collection purpose). If approved, revisions extend the OMB Control Number for a further three years.
Extension of a Currently Approved Collection: Extensions are used for currently approved collections that do not require substantive changes. If approved, Extensions will extend the OMB Control Number expiration date by a further three years.
Reinstatement (with change) of a Previously Approved Collection: Expired collections with substantive changes
Reinstatement (without change) of a Previously Approved Collection: Expired collections with no changes
Generic IC: OMB devised the generic clearance to streamline the clearance process. Generic clearances may contain many different collections as long as they have the same purpose. Reviews occur in two steps: (1) review of the overall plan that follows the normal clearance procedures; and (2) review of the specific data collection that requires minimal documentation and no public comment periods.
Request for Emergency Clearance: DoD may request an emergency clearance from OMB when DoD cannot reasonably comply with normal clearance procedures due to potential for public harm (e.g., public health epidemics); unanticipated events (e.g., natural disasters); and the normal clearance procedures will likely cause statutory or court ordered deadlines to be missed or the information collection to be prevented or disrupted.