Sainmhíniú an EDIFACT message exchanged by trading partners to specify a set of requirements for various functional, quality, and performance aspects of a product, process, or service. It applies to all generic product categories defined by the International Organisation for Quality Management and Quality Assurance: hardware, software, processed materials, and services. The set of requirements may be supplied in the message in various forms appropriate to the particular functionality being specified, including graphic, parametric, image, spectral, text, or digitised audio data. The contents of the message include complete or partial specifications or technical data or other information required to define any specific product, process, or services Tagairt Schlieper, Henry's Yellow Book on the Net, An Introduction to UN/EDIFACT Messages, Directories D.00B, 2000, EDIasia