Updated on 2025-11-06 GMT+08:00

Notes and Constraints

The following table lists the default quotas of various resources on IAM. For details, see How Do I Increase My Quota?

Category

Item

Default Quota

Maximum Value

Adjustable

User

IAM users

50

2000

Yes

Characters allowed in a username

64

-

No

Identity policies you can attach to a user

10

20

User groups a user can belong to

10

-

No

AK/SK pairs that a user can create

2

-

No

Virtual MFA devices you can add to a user

1

-

No

User group

User groups

20

2000

Yes

Characters allowed in a user group name

128

-

No

Users you can add to a user group

IAM users in your account

-

No

Identity policies you can attach to a user group

10

-

No

Agency and trust agency

Characters allowed in a trust agency name

64

-

No

Total agencies and trust agencies

50

5000

Yes

Permissions (including system-defined and custom identity policies) assigned to an agency or trust agency

10

20

Yes

Identity policy

Custom identity policies

1,500

5000

Yes

Custom identity policy versions

5

-

No

Characters allowed in an identity policy name

128

-

No

Custom identity policy

Bytes

6,144

-

No

Bytes allowed in a statement

There is no limit for each statement, but the total number of bytes of an identity policy cannot exceed 6,144.

-

No

Bytes allowed in an action

There is no limit for each action, but the total number of bytes of an identity policy cannot exceed 6,144.

-

No

Bytes allowed in a resource

There is no limit for each resource, but the total number of bytes of an identity policy cannot exceed 6,144.

-

No

Bytes allowed in a condition

There is no limit for each condition, but the total number of bytes of an identity policy cannot exceed 6,144.

-

No