A SOW identifies the work that is to be performed by a contractor. The CDRL designates the data that is to be provided to the government. The DID designates the format and content of the data to be submitted to the government. The document is designated as DD1423 for the Department of Defense (DoD) and is a part of every contract. Government employees and contractors have sections that require completion on the form.
CDRLs represent the fundamental contract document which describes data required by and for the contract. Contractors have to provide the data described in the DIDs that accompany the document. The Contract Data Requirements List identifies each item of data requested as deliverable in the delivery order. DIDs that are not listed or identified in a specific Deliver Order Statement of Work will not be needed for that Deliver Order. Contractors have to structure, maintain and deliver all data in compliance with the requirements stated on the document.
The DoD has very strict requirements regarding use and completion of the Contract Data Requirements List. Some sections are self-explanatory. Each CDRL contains a data item number, data item title and a data item approval code. All data requirements listed on the document have a corresponding DID. If a minor change, designated as Class II, should occur in the final versions of data items that have been delivered, contractors are afforded the opportunity to create a document change notice. The document is essential in communicating which analysis, maps, drawings, samples or spreadsheets are needed by the government.