# `Stripe.Params.BillingPortal.SessionCreateParams`
[🔗](https://github.com/jeffhuen/tiger_stripe/blob/main/lib/stripe/params/billing_portal/session_create_params.ex#L2)

Parameters for session create.

# `t`

```elixir
@type t() :: %Stripe.Params.BillingPortal.SessionCreateParams{
  configuration: String.t() | nil,
  customer: String.t() | nil,
  customer_account: String.t() | nil,
  expand: [String.t()] | nil,
  flow_data: Stripe.Params.BillingPortal.SessionCreateParams.FlowData.t() | nil,
  locale: String.t() | nil,
  on_behalf_of: String.t() | nil,
  return_url: String.t() | nil
}
```

* `configuration` - The ID of an existing [configuration](https://docs.stripe.com/api/customer_portal/configuration) to use for this session, describing its functionality and features. If not specified, the session uses the default configuration. Max length: 5000.
* `customer` - The ID of an existing customer. Max length: 5000.
* `customer_account` - The ID of an existing account. Max length: 5000.
* `expand` - Specifies which fields in the response should be expanded.
* `flow_data` - Information about a specific flow for the customer to go through. See the [docs](https://docs.stripe.com/customer-management/portal-deep-links) to learn more about using customer portal deep links and flows.
* `locale` - The IETF language tag of the locale customer portal is displayed in. If blank or auto, the customer’s `preferred_locales` or browser’s locale is used. Possible values: `auto`, `bg`, `cs`, `da`, `de`, `el`, `en`, `en-AU`, `en-CA`, `en-GB`, `en-IE`, `en-IN`, `en-NZ`, `en-SG`, `es`, `es-419`, `et`, `fi`, `fil`, `fr`, `fr-CA`, `hr`, `hu`, `id`, `it`, `ja`, `ko`, `lt`, `lv`, `ms`, `mt`, `nb`, `nl`, `pl`, `pt`, `pt-BR`, `ro`, `ru`, `sk`, `sl`, `sv`, `th`, `tr`, `vi`, `zh`, `zh-HK`, `zh-TW`.
* `on_behalf_of` - The `on_behalf_of` account to use for this session. When specified, only subscriptions and invoices with this `on_behalf_of` account appear in the portal. For more information, see the [docs](https://docs.stripe.com/connect/separate-charges-and-transfers#settlement-merchant). Use the [Accounts API](https://docs.stripe.com/api/accounts/object#account_object-settings-branding) to modify the `on_behalf_of` account's branding settings, which the portal displays.
* `return_url` - The default URL to redirect customers to when they click on the portal's link to return to your website.

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*Consult [api-reference.md](api-reference.md) for complete listing*