Know tag restrictions - Amazon Data Firehose
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Firehose supports database as a source in all Amazon Web Services Regions except China Regions, Amazon GovCloud (US) Regions, and Asia Pacific (Malaysia). This feature is in preview and is subject to change. Do not use it for your production workloads.

Know tag restrictions

The following restrictions apply to tags in Amazon Data Firehose.

Basic restrictions

  • The maximum number of tags per resource (stream) is 50.

  • Tag keys and values are case-sensitive.

  • You can't change or edit tags for a deleted stream.

Tag key restrictions

  • Each tag key must be unique. If you add a tag with a key that's already in use, your new tag overwrites the existing key-value pair.

  • You can't start a tag key with aws: because this prefix is reserved for use by Amazon. Amazon creates tags that begin with this prefix on your behalf, but you can't edit or delete them.

  • Tag keys must be between 1 and 128 Unicode characters in length.

  • Tag keys must consist of the following characters: Unicode letters, digits, white space, and the following special characters: _ . / = + - @.

Tag value restrictions

  • Tag values must be between 0 and 255 Unicode characters in length.

  • Tag values can be blank. Otherwise, they must consist of the following characters: Unicode letters, digits, white space, and any of the following special characters: _ . / = + - @.