Limitations with multiple domains
When you add a domain to your managed Google Account, you need to keep in mind some limitations so that you can set up the primary and secondary domains correctly. The following topics discuss different features for primary and secondary domains.
Tip: Google uses the name of your primary domain as the name for your organization as a whole. This is the organization name referenced in the sharing options that users see. When you add other domains, you might want to change your organization name to a more inclusive name.
Google Admin console
- You can't set different policies or configuration settings for different domains directly. However, you can put all users from one domain into an organizational unit and all users from another domain into a different unit, and then apply different policies to each organizational unit.
- You can specify only one logo for your domains. The same logo appears for users in all domains that are part of your account.
Domain names and aliases
- G Suite account merge is not supported. Some current G Suite customers with multiple domains have separate G Suite accounts for each domain. Google does not currently support merging multiple G Suite accounts into a single multiple domain account.
- Migration from domain aliases is not supported. Some current G Suite customers use domain aliases for their non-primary domains. Google does not currently support the conversion of domain aliases into multi domain accounts.
- In the legacy free edition of G Suite, secondary domains are not supported. The legacy free edition of G Suite only supports domain aliases. All the other restrictions tied to domain aliases apply.
Account access URLs
- You cannot create a global URL for accessing your Google service. Users access their managed Google Account with a URL that includes the domain name from their email address, for example http://docs.google.com/a/subsidiaryA.com. You can't provide a global URL that users from all domains share.
Google Drive (G Suite only)
You can't restrict sharing to users in a single domain. Sharing options are based on the organization as a whole (or organizational units with some G Suite editions), not individual domains. With G Suite Enterprise, G Suite Business, G Suite for Education, or G Suite for Nonprofits, you can create an organizational unit for everyone at a particular domain and then restrict sharing for that organizational unit.
To share a document with the users in a single domain (or any other subset of users), create a Google Group that includes all the users and share the document with that group.
Google Sites (G Suite only)
- Searches for sites return sites only in the same domain as the user. For example, a user with an address in a secondary domain will not find sites created in the primary domain.
Google App Engine
- Applications that use Google App Engine are not available for users at non primary domains.