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 Adjustable Number of resource shares that each enterprise management account or member account can create 10 Apply for a quota. Number of resources that each enterprise management account or member account can share with other accounts 10 Apply for a quota. Number of resources in each request 5 N/A Number of shared targets in each request 5 N/A
Limits on resource groups
|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
|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