# Move an alternate domain name
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If you try to add an alternate domain name to a standard distribution or distribution tenant, and the alternate domain name is already associated with a different resource, you will get an error message.

For example, you will get the `CNAMEAlreadyExists` error message (One or more of the CNAMEs you provided are already associated with a different resource) when you try to add www.example.com to a standard distribution or distribution tenant, but that alternate domain name is already associated with a different resource.

In that case, you might want to move the existing alternate domain name from one resource to another. This is the *source distribution* and the *target distribution*. You can move alternate domain names between either standard distributions and/or distribution tenants.

To move the alternate domain name, see the following topics:

**Topics**
+ [Set up the target standard distribution or distribution tenant](alternate-domain-names-move-create-target.md)
+ [Find the source standard distribution or distribution tenant](alternate-domain-names-move-find-source.md)
+ [Move the alternate domain name](alternate-domain-names-move-options.md)