The Contract Data Requirements List (CDRL) is usually contained in Part III, Section J of the government solicitation you are bidding and the executed contract upon award.
The CDRL is a register of the deliverable data items. Each data item has a discrete numeric identifier, a data item description (DID) number and a delivery schedule to the customer.
On occasion the government finds it necessary to terminate contractual arrangements with contractors. FAR Sub-part 49.5