externalAccountId property
An optional, immutable identifier that Google uses to refer to this account when communicating with the provider.
This should be the unique account ID within the provider's system (for
example, your shop ID in Shopify). If you have multiple accounts with the
same provider - for instance, different accounts for various regions — the
external_account_id differentiates between them, ensuring accurate
linking and integration between Google and the provider.
Immutable.
Implementation
core.String? externalAccountId;