( Requisitos de desempeño en español) a requirement that: a given level or porcentage of goods or services be exported; domestic goods or services of the party granting a waiver of customs duties be substituted for imported goods or services; a person benefitin from a waiver of customs duties purchase other goods or services in the territory of the party granting the waiver or accord a preference to domestically produced goods or services; a person benefiting from a waiver of customs dutiesproduce goods or services, in the territory of the party granting the waiver, with a given level or percentage of domestic content; or relates in any way the volume or value of imports to the volume or value of exports or to the amount of foregn exchange inflows.

A requirement that an importer or exporter achieve some level of performance, in terms of exporting, domestic content, etc., in order to obtain an import or export license.

(IEEE) A requirement that imposes conditions on a functional requirement; e.g., a requirement that specifies the speed, accuracy, or memory usage with which a given function must be performed.

A performance requirement is a statement that describes how well a function is to be executed or achieved, or how well it is to be accomplished.

Any requirement established by the regulatory authority to ensure future compliance with the public health and environmental goals of the community. Performance requirements can be expressed as numeric limits (e.g., pollutant concentrations, mass loads, wet weather flows, structural strength) or narrative descriptions of desired performance, such as no visible leaks or no odors.