To identify dependencies among and the content of hierarchically related groups of data segments.
To provide reference to a specific purchase order
To specify pertinent dates and times
To specify identifying numbers.
To specify basic item identification data.
To describe a product or process in coded or free-form format
To specify physical measurements or counts, including dimensions, tolerances, variances, and weights (See Figures Appendix for example of use of C001.)
To specify quantity information.
To transmit financial accounting data
To specify information related to furnished material, equipment, property, information, and services.