Microsoft KB Archive/108458

Project: Lag Uses Base Calendar Instead of Resource Calendar

PSS ID Number: Q108458 Article last modified on 10-20-1995

3.00 3.00a

WINDOWS

= SYMPTOMS =

When you specify lag time to delay a task, the task may appear to be incorrectly scheduled.

= CAUSE =

This behavior may occur when a resource assigned to a task has a different calendar than the base calendar. At this point, the portion of the task where the lag is scheduled will be scheduled using the Base Calendar.

Microsoft Project uses the Base Calendar to schedule lag to avoid any potential conflicts when scheduling multiple resources.

= WORKAROUND =

Instead of using a lag to extend the date of the task, do the following to apply a delay:

  From the View menu, choose Define Views.   Select Delay Gantt View and choose Set.   Enter a delay in the delay field. NOTE: The delay field is always calculated in elapsed days. 

= MORE INFORMATION =

Steps to Reproduce Behavior
  From the View menu, choose Task Entry.   From the Options menu, choose Project Info, and change the Project Start date to November 18, 1993.   Create two tasks, T1 and T2.   Select the two tasks and choose Link Tasks from the Edit menu. </li>  Select task T2 and press the F6 key to activate the Task Form. </li>  From the Format menu, choose Resources and Predecessors. </li>  In the Task Form, enter “1w” (without the quotation marks) lag for the Predecessor. </li>  Assign a resource, BOB, to task T2. </li>  From the Options menu, choose Base calendar. </li>  Change the week of November 21, 1993, to nonworking and choose OK. </li>  From the Options menu, choose Resource Calendar. </li>  Change the week of November 21, 1993, to working. </li>  The Schedule Start date of T2 will now be rescheduled to December 3,  </li></ol> </li></ol>

Even though the task is resource driven, the lag is still scheduled using the base calendar. This causes the task to be scheduled two weeks after the finish date of task T1.

KBCategory: kbusage KBSubcategory:

= Additional reference words: 3.00 3.00a lead =

Copyright Microsoft Corporation 1995.