Out-of-memory errors may occur before you reach the listed limits.

Attribute

Maximum

Resources per project

700,000

Resource units per assignment

60,000,000 units or 6,000,000,000%

Resource availability dates

100

Tasks per project

400,000

Task dependencies per project

No limit

Predecessors per task

50,000

Successors per task

50,000

Outline levels per project

65,535

Consolidated projects

998

Open project files per consolidated project

998

Sharer files connected to a single resource pool

997

(That is, the maximum number of open project files, minus 1 for the resource pool itself.)

Open windows

50

Base calendars

Tested to 30,000+

Calendar exceptions per calendar

Testing was able to add more than 15,000 exceptions to a base calendar.

Rate tables to support varying pay scales and rates

5 per resource

Variable rates per rate table to support rate increases and decreases

25

Cost value in a currency field

999,999,999,999.99

Work value

1,666,666,666 hours

Assignment work values for work assignments

999,999,999 hours

Assignment work values for variable material assignments

999,999,999 units

Assignment work values for fixed material assignments

60,000,000 units

Custom cell formats

64,000

Print scaling adjustment range percentage

10%-500%

Page header text

5 lines

Page footer text

3 lines

Page legend text

3 lines

Page legend text box width

5 inches (12.7 centimeters)

Filter tests per filter

40

Filter tests per AutoFilter

2 per column

Earliest date allowed for calculation

January 1, 1984

Latest date allowed for calculation

December 31, 2149

(In Project 2010, the last date allowed for calculation is December 31, 2049.)

Discontinuous selections in a sheet view

10

Baselines

11

Characters in a text field

255

Characters in an outline code field

255

Values and characters in an Enterprise Resource Multi-Value (ERMV) field

255 values, each of 255 characters

Value in a number field

9,999,999,999,999.99