This topic provides the limits of Resource Management, including the limits on resource groups, resource directories, resource sharing, and tags.
Limits on resource directories
|Number of resource directories that you can create by using an Alibaba Cloud account||1||N/A||The member accounts 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 member accounts 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.|
|Duration of account creation confirmation||24 hours||N/A||None.|
|Duration of account upgrade confirmation||24 hours||N/A||None.|
|Duration of invitation expiration||14 days||N/A||None.|
Limits on resource sharing
- Only vSwitches in VPCs can be shared. For more information, see Overview.
- The following table lists other limits.
Item Upper limit Number of resource shares that each master account or member account can create 10 Number of resources that each master account or member account can share with other accounts 10 Number of resources in each request 5 Number of member accounts in each request 5
Limits on resource groups
|Number of resource groups||30||Apply for a quota.|
|Number of characters in the ID of a resource group||12 (The lower limit is 3.)||N/A|
|Number of characters in the name of a resource group||12||N/A|
Limits on tags
|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
|Tag value||A tag value must be 1 to 128 characters in length and cannot contain
|Adding tags to resources||
Each tag key on a resource can have only one tag value. If you create a tag that has the same key as an existing tag, the value of the existing tag is overwritten.
For example, the