Use Limits

Last updated: 2019-11-08 17:48:10

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Limits on tag keys

  • A tag key starting with qcs: or project is a system reserved tag key, so these prefixes cannot be used when creating a tag key.
  • Can only contain characters encoded in UTF-8, spaces, numbers, or special characters including + - = ._ : / @.
  • Tag key length is 127 characters (encoded in UTF-8).
  • A tag key is case sensitive.

Limits on tag values

  • Can only contain characters encoded in UTF-8, spaces, numbers, or special characters including + - = ._ : / @.
  • Tag value length is 255 characters (encoded in UTF-8).
  • A tag value is case sensitive.

Limits on the number of tags

  • Resource dimension: A resource can have at most 50 different keys.
  • Tag dimension:
    • A user can have at most 1,000 different keys.
    • A key can have at most 1,000 values.