Microsoft Project 2007: Task Constraints
Task constraints are conditions you place on the start or finish date of a task. There are eight constraint types available. Let's take a look at these.
As Late As Possible (ALAP)
This flexible constraint schedules the task as late as possible with the task ending before the project finish and without delaying subsequent tasks. This is the default constraint for tasks when scheduling from the project finish date. Do not enter a task or finish date with this constraint.
As Soon As Possible (ASAP)
This flexible constraint schedules the task to begin as early as possible. This is the default constraint for tasks when scheduling from the project start date. Do not enter a start or finish date with this constraint.
Finish No Earlier Than (FNET)
Schedules the task to finish on or after a specified date. Use this constraint to ensure that a task does not finish before a certain date.
Finish No Later Than (FNLT)
Schedules the task to finish on or before a specified date. Use this constraint to ensure that a task does not finish after a certain date.
Must Finish On (MFO)
This inflexible constraint schedules the task to finish on a specified date. Sets the early, scheduled, and late finish dates to the date you type and anchors the task in the schedule.
Must Start On (MSO)
This inflexible constraint schedules the task to start on a specified date. Sets the early, scheduled, and late start dates to the date you type and anchors the task in the schedule.
Start No Earlier Than (SNET)
Schedules the task to start on or after a specified date. Use this constraint to ensure that a task does not start before a specified date.
Start No Later Than (SNLT)
Schedules the task to start on or before a specified date.
Because the project management best practice is to schedule a project from the start date, the assumption is made that all the tasks use As Soon As Possible constraint.
Highly flexible
As Late As Possible
As Soon As Possible
Somewhat flexible
Finish No Earlier Than
Finish No Later Than
Start No Earlier Than
Start No Later Than
Highly inflexible
Must Finish On
Must Start On
As Late As Possible (ALAP)
This flexible constraint schedules the task as late as possible with the task ending before the project finish and without delaying subsequent tasks. This is the default constraint for tasks when scheduling from the project finish date. Do not enter a task or finish date with this constraint.
As Soon As Possible (ASAP)
This flexible constraint schedules the task to begin as early as possible. This is the default constraint for tasks when scheduling from the project start date. Do not enter a start or finish date with this constraint.
Finish No Earlier Than (FNET)
Schedules the task to finish on or after a specified date. Use this constraint to ensure that a task does not finish before a certain date.
Finish No Later Than (FNLT)
Schedules the task to finish on or before a specified date. Use this constraint to ensure that a task does not finish after a certain date.
Must Finish On (MFO)
This inflexible constraint schedules the task to finish on a specified date. Sets the early, scheduled, and late finish dates to the date you type and anchors the task in the schedule.
Must Start On (MSO)
This inflexible constraint schedules the task to start on a specified date. Sets the early, scheduled, and late start dates to the date you type and anchors the task in the schedule.
Start No Earlier Than (SNET)
Schedules the task to start on or after a specified date. Use this constraint to ensure that a task does not start before a specified date.
Start No Later Than (SNLT)
Schedules the task to start on or before a specified date.
Because the project management best practice is to schedule a project from the start date, the assumption is made that all the tasks use As Soon As Possible constraint.
Highly flexible
As Late As Possible
As Soon As Possible
Somewhat flexible
Finish No Earlier Than
Finish No Later Than
Start No Earlier Than
Start No Later Than
Highly inflexible
Must Finish On
Must Start On
posted by Mayur @ 8:08 PM
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