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5 - PROJECT SCOPE MANAGEMENT
• WBS. The WBS is a hierarchical decomposition of the total scope of work to be carried out by the project
team to accomplish the project objectives and create the required deliverables. Each descending level
of the WBS represents an increasingly detailed definition of the project work. The WBS is finalized by
assigning each work package to a control account and establishing a unique identifier for that work
package from a code of accounts. These identifiers provide a structure for hierarchical summation
of costs, schedule, and resource information. A control account is a management control point
where scope, budget, actual cost, and schedule are integrated and compared to the earned value for
performance measurement. Control accounts are placed at selected management points in the WBS.
Each control account may include one or more work packages, but each of the work packages should
be associated with only one control account. A control account may include one or more planning
packages. A planning package is a work breakdown structure component below the control account
with known work content but without detailed schedule activities.
• WBS dictionary. The WBS dictionary is a document that provides detailed deliverable, activity, and
scheduling information about each component in the WBS. The WBS dictionary is a document that
supports the WBS. Information in the WBS dictionary may include, but is not limited to:
○ Code of account identifier,
○ Description of work,
○ Assumptions and constraints,
○ Responsible organization,
○ Schedule milestones,
○ Associated schedule activities,
○ Resources required,
○ Cost estimates,
○ Quality requirements,
○ Acceptance criteria,
○ Technical references, and
○ Agreement information.
5.4.3.2 Project documents updates
Project documents that may be updated include, but are not limited to, requirements documentation, which may
need to be updated to include approved changes. If approved change requests result from the Create WBS process,
then the requirements documentation may need to be updated to include approved changes.
132 ©2013 Project Management Institute. A Guide to the Project Management Body of Knowledge (PMBOK Guide) – Fifth Edition
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Licensed To: Jorge Diego Fuentes Sanchez PMI MemberID: 2399412
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