Generating Network Messages

For each activity LN carries out the following checks:

• If the project is a subproject, LN checks that the earliest start date of an activity is not before the start date of the subproject.
• The desired start date for an activity must lie between the earliest and latest start date.
• On the basis of the progress of the preceding activities, LN checks whether the activity can start. During this process, it signals whether the previous activities are before or behind schedule.
• LN checks that the actual start date does not lie before the earliest (computed) start date or after the latest planned start date of the activity.
• If the project is a subproject, LN checks that the earliest finish date of an activity does not lie AFTER the completion date of the subproject.
• The desired finish date for an activity must lie between the earliest and latest finish date.
• LN checks that the computed finish date of the activity does not lie AFTER the latest planned finish date.
• LN checks that the actual finish date does not lie before the earliest (computed) finish date or after the latest planned finish date of the activity.

LN reports any deviations between the project's planned and actual progress, or inconsistencies in the network planning.