CDRLs are contract deliverables.  If you intend the winning contractor to deliver something, you must make it aware of what is to be delivered and in what format.  A contractor cannot perform to a CDRL item it is not aware of and is not required to perform to a CDRL that is not on contract.  We are not aware of a DD Form 260.  But if that form is something that needs to be filled out or contains material/information offerors need to properly create a competitive, reasonable and realistic offer, it must be attached to the solicitation.