Acquisition planningRequirements document
HLL
High-Level Requirement List
Definition
A High-Level Requirement List documents the top-tier requirements that define system or program scope and objectives. HLLs capture essential capabilities and constraints before detailed requirements decomposition.
HLL development supports acquisition planning and market research activities. Understanding HLL content helps contractors assess opportunity fit and develop responsive strategies. HLLs establish the foundation for detailed requirements development and solicitation preparation.
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