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# Sitename definition¶

Each environment in a sitegroup on the Acquia Platform has a unique sitename. The sitename naming convention consists of the sitegroup and the abbreviated environment name.

For example, if the name of the sitegroup is acquia, and it has the three standard environments (development, stage, and production), the website can have three docroot directories that are respectively named acquiadev, acquiastg, and acquiaprod.

Sitenames have the following naming requirements:

• Total length can be no more than 21 characters
• The environment part of the sitename can be no more than 10 characters
• Must consist of alphanumeric characters; underscores, spaces, and special characters aren’t allowed
• Only lowercase alphanumeric characters are accepted
• Must not begin with a number

Note

Production environment sitenames generally don’t include the environment abbreviation prod. As a result, the production environment’s sitename is often the same as its sitegroup.