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The input for SetSecurityTokenServicePreferencesCommand.
The version of the global endpoint token. Version 1 tokens are valid only in Amazon Web Services Regions that are available by default. These tokens do not work in manually enabled Regions, such as Asia Pacific (Hong Kong). Version 2 tokens are valid in all Regions. However, version 2 tokens are longer and might affect systems where you temporarily store tokens.
For information, see Activating and deactivating STS in an Amazon Web Services Region in the IAM User Guide.