This topic provides the limits of Resource Management, including the limits on resource groups, resource directories, resource sharing, and tags.
Limits on resource directories
| Item | Upper limit | Adjustable | Remarks |
|---|---|---|---|
| Number of resource directories that you can create by using an Alibaba Cloud account | 1 | N/A | The members of a resource directory cannot be used to create resource directories. |
| Number of Root folders in a resource directory | 1 | N/A | None. |
| Number of folders in a resource directory | 100 | Apply for a quota. | The Root folder is not included. |
| Number of folder levels | 5 | N/A | The Root folder is not included. |
| Number of members in a resource directory | 20 | Apply for a quota. | None. |
| Number of valid invitations per day | 20 | Apply for a quota. | Accepted invitations are not included. |
| Validity period of an invitation | 14 days | N/A | None. |
| Number of verification codes that can be sent per day when you bind a mobile phone number to a member for security purposes | 100 | N/A | None. |
| Number of custom access control policies that can be created in a resource directory | 1,500 | N/A | None. |
| Number of custom access control policies that can be attached to each folder or member | 10 | Apply for a quota. | None. |
| Number of characters that each custom access control policy can contain | 4,096 | N/A | None. |
Limits on resource sharing
| Item | Upper limit | Adjustable |
|---|---|---|
| Number of resource shares that can be created by using each account | 10 | Apply for a quota. |
| Number of resources that can be shared with other accounts by using each account | 10 | Apply for a quota. |
| Number of resources in each request | 5 | N/A |
| Number of principals in each request | 5 | N/A |
Limits on resource groups
| Item | Upper limit | Adjustable |
|---|---|---|
| Number of resource groups | 30 | Apply for a quota. |
| Number of characters in the ID of a resource group | 50 | N/A |
| Number of characters in the name of a resource group | 50 | N/A |
Limits on tags
| Item | Limit |
|---|---|
| Maximum number of tags that can be added to a single resource | 20 |
| Whether tag information can be shared across regions | No. For example, in the China (Shanghai) region, you cannot view tags created in the China (Hangzhou) region. |
| Tag key | A tag key must be 1 to 128 characters in length and cannot contain http:// or https://. It cannot start with aliyun or acs:. |
| Tag value | A tag value must be 1 to 128 characters in length and cannot contain http:// or https://. It cannot start with aliyun or acs:. |
| Adding tags to resources | Each tag key on a resource can have only one tag value. If you attempt to add a tag that has the same key as an existing tag, the value of the existing tag is overwritten. For example, the |
| Maximum number of preset tags that can be created within a single Alibaba Cloud account | 1,000 |
| Maximum number of tag values that can be specified for a single preset tag key | 1,000 |
Note
- The number of policies that can be attached to a RAM user, RAM user group, or RAM role is not affected by authorization scope. In other words, you can apply the same number of policies whether you grant permissions on a single resource group or on your Alibaba Cloud account.
- This topic lists only the default quotas for the items. The quotas of specific items are adjustable. To apply for a quota increase, go to the Quota Center page. You can configure quotas for a wide range of Alibaba Cloud services in Quota Center. For more information, see Services that work with Quota Center.