Function Point Counting Practices Manual, Release 4.3.1

Release 4.3.1, January 2010 - This release replaces Release 4.2.1, which is now obsolete.

The standard in this manual should be applied by anyone using function point analysis for functional size measurement. The manual was designed for use by persons new to functional size measurement as well as those with intermediate and advanced experience.

The primary objectives of the IFPUG Counting Practices Manual, Release 4.3, are to:

  • Comply with ISO/IEC 14143-1:2007 Information technology – Software measurement – Functional size measurement – Definition of concepts
  • Provide a clear and detailed description of function point counting
  • Ensure that counts are consistent with the counting practices of IFPUG affiliate members
  • Provide guidance to allow function point counting from the deliverables of popular methodologies and techniques
  • Provide a common understanding to allow tool vendors to provide automated support for function point counting


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