"Invalid environment URL - this URL is not available" when migrating to use environments

[hugetim]

Welcome to the forum!

In future please try to ask your question in only one place. Otherwise, someone may take time to answer a question that has already been answered elsewhere, which can be frustrating.

For the reference of others, this has been addressed elsewhere:

Invalid environment URL - this URL is not avariable

Hi @a.mestre, That probably means that custom domain is already associated with another environment (possibly another Anvil app). Did you already configure that domain on another of your apps, perhaps?