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

Note

The limits on Projects and Tasks are enhanced for better experience. Currently, new limits are under private preview. Register for private preview at Signup for new limits.

Field Limit New Limits
Maximum total tasks for a project 1,500 3000
Maximum total duration for a project 3,650 days (10 years) 5,475 days (15 years)
Maximum total resources for a project 300 1000
Maximum total links (successor only) for a project 600 600
Maximum total custom fields for a project 10 10
Maximum checklist items per task 20 20

Task limitations

Field Limit New Limits
Maximum hierarchy level 10 levels 10 levels
Maximum links (successor + predecessor) 20 20
Maximum duration of leaf task 1,250 days 1,250 days
Maximum duration of a summary task 3,650 days (10 years) 5,475 days (15 years)
Maximum resources assigned to a task 20 resources 50 resources
Supported date range for a task 1/1/2000 - 12/31/2149 1/1/2000 - 12/31/2149