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Notes and Constraints
The following are basic constraints on using tags:
Item |
Specifications |
---|---|
Maximum number of key-value pairs you can add for each resource |
10 |
Tags of each resource |
For each resource, each tag key must be unique, and each tag key can have only one tag value. |
The maximum predefined tags that each account can create. |
500 |
Predefined tags |
Predefined tags cannot be identical. Either their keys or values must be different. If you create a predefined tag that is identical to an existing predefined tag, the existing predefined tag will be overwritten. |
Tag keys |
A tag key can contain a maximum of 36 characters, including digits, letters, underscores (_), and hyphens (-). |
Tag values |
A tag value can contain a maximum of 43 characters, including digits, letters, underscores (_), periods (.), and hyphens (-). |
Not all resources are supported by TMS. For which services and resources are supported, you can go to the service console to check it out.
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