Project and task limitations

You should be aware of the following limitations if you're using the work breakdown structure in Project Operations. These limits apply to projects and tasks. For more information, see Project for the web limits and boundaries.

Project limitations

Field Limit
Maximum total tasks for a project 1,500
Maximum total duration for a project 3,650 days (10 years)
Maximum total resources for a project 300
Maximum total links (successor only) for a project 600
Maximum total custom fields for a project 10
Maximum checklist items per task 20

Task limitations

Field Limit
Maximum hierarchy level 10 levels
Maximum links (successor + predecessor) 20
Maximum duration of leaf task 1,250 days
Maximum duration of a summary task 3,650 days (10 years)
Maximum resources assigned to a task 20 resources
Supported date range for a task 1/1/2000 - 12/31/2149