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Level 4 is an individual deliverable/document level, so for example 'Produce Test Strategy' and Level 3 is a group of deliverables, for example 'Test Documentation'
MS PROJECT would do
Since EPC schedule levels are normally limited to Levels 1 through 3, sometimes an ‘external’ schedule or set of schedules would be included for a project. These external schedules are called Level 4.
EPC Level 4 is detailed work schedules and generally would be prepared outside of the CPM software, with careful correlation to the CPM schedule activities and scope of work. The theory is, that if there is too much detail within the CPM network, the schedule would not only lose its flexibility as a value-added tool to manage the job, but schedule maintenance would become difficult, due to the greater effort needed to maintain the CPM logic after each progress update. A variety of software tools can be employed to develop work schedules at Level 4 and below: spreadsheets, databases, and word processing are all utilized.
