AFRealm
The Advanta Mobile API platform (realm) your app's members belong to.
Set via AFCoreConfig.Builder.realm. The SDK sends it on every request as the X-Advanta-Realm header so the AIDE Gateway routes the member to the platform that owns their account. This matters most for login and token refresh, which run before the Gateway has a signed token to read the realm from.
The member's access token also carries the realm it was issued for. The Gateway rejects a request whose header disagrees with that token, so the realm configured here must match the platform the app authenticates against.
When no realm is configured the header is omitted and the Gateway routes to BISMUTH, which preserves the behavior of integrations built before this setting existed.