---
title: "Update Registration Flow"
method: POST
path: "/self-service/registration"
tags: ["frontend"]
---

# Update Registration Flow

`POST /self-service/registration`

Use this endpoint to complete a registration flow by sending an identity's traits and password. This endpoint
behaves differently for API and browser flows.

API flows expect `application/json` to be sent in the body and respond with
HTTP 200 and a application/json body with the created identity success - if the session hook is configured the
`session` and `session_token` will also be included;
HTTP 410 if the original flow expired with the appropriate error messages set and optionally a `use_flow_id` parameter in the body;
HTTP 400 on form validation errors.

Browser flows expect a Content-Type of `application/x-www-form-urlencoded` or `application/json` to be sent in the body and respond with
a HTTP 303 redirect to the post/after registration URL or the `return_to` value if it was set and if the registration succeeded;
a HTTP 303 redirect to the registration UI URL with the flow ID containing the validation errors otherwise.

Browser flows with an accept header of `application/json` will not redirect but instead respond with
HTTP 200 and a application/json body with the signed in identity and a `Set-Cookie` header on success;
HTTP 303 redirect to a fresh login flow if the original flow expired with the appropriate error messages set;
HTTP 400 on form validation errors.

If this endpoint is called with `Accept: application/json` in the header, the response contains the flow without a redirect. In the
case of an error, the `error.id` of the JSON response body can be one of:

`session_already_available`: The user is already signed in.
`security_csrf_violation`: Unable to fetch the flow because a CSRF violation occurred.
`security_identity_mismatch`: The requested `?return_to` address is not allowed to be used. Adjust this in the configuration!
`browser_location_change_required`: Usually sent when an AJAX request indicates that the browser needs to open a specific URL.
Most likely used in Social Sign In flows.

More information can be found at [Ory Kratos User Login](https://www.ory.com/docs/kratos/self-service/flows/user-login) and [User Registration Documentation](https://www.ory.com/docs/kratos/self-service/flows/user-registration).

## Query parameters

- `flow` string, required

## Headers

- `Cookie` string

## Request body

- UpdateRegistrationFlowBody — Update Registration Request Body

## Response `200`

successfulNativeRegistration

- SuccessfulNativeRegistration — The Response for Registration Flows via API
  - `continue_with` ContinueWith[] — Contains a list of actions, that could follow this flow It can, for example, this will contain a reference to the verification flow, created as part of the user's registration or the token of the session.
  - `identity` Identity, required — An [identity](https://www.ory.com/docs/kratos/concepts/identity-user-model) represents a (human) user in Ory.
    - `created_at` string, date-time — CreatedAt is a helper struct field for gobuffalo.pop.
    - `credentials` object — Credentials represents all credentials that can be used for authenticating this identity.
    - `external_id` string — ExternalID is an optional external ID of the identity. This is used to link the identity to an external system. If set, the external ID must be unique across all identities.
    - `id` string, uuid, required — ID is the identity's unique identifier. The Identity ID can not be changed and can not be chosen. This ensures future compatibility and optimization for distributed stores such as CockroachDB.
    - `metadata_admin` NullJsonRawMessage — NullJSONRawMessage represents a json.RawMessage that works well with JSON, SQL, and Swagger and is NULLable-
    - `metadata_public` NullJsonRawMessage — NullJSONRawMessage represents a json.RawMessage that works well with JSON, SQL, and Swagger and is NULLable-
    - `organization_id` NullUUID — NullUUID can be used with the standard sql package to represent a UUID value that can be NULL in the database.
      - `UUID` string, uuid
      - `Valid` boolean
    - `recovery_addresses` RecoveryIdentityAddress[] — RecoveryAddresses contains all the addresses that can be used to recover an identity.
      - `break_glass_for_organization` NullUUID — NullUUID can be used with the standard sql package to represent a UUID value that can be NULL in the database.
        - `UUID` string, uuid
        - `Valid` boolean
      - `created_at` string, date-time — CreatedAt is a helper struct field for gobuffalo.pop.
      - `id` string, uuid
      - `updated_at` string, date-time — UpdatedAt is a helper struct field for gobuffalo.pop.
      - `value` string, required
      - `via` string, required
    - `region` 'eu-central' | 'asia-northeast' | 'us-east' | 'us-west' | 'eu' | 'asia' | 'us' | 'global' — Region is the Ory Network region this identity is homed in. Set by the multi-region persister; empty on OSS and single-region deployments. eu-central EUCentral asia-northeast AsiaNorthEast us-east USEast us-west USWest eu EU asia Asia us US global Global
    - `schema_id` string, required — SchemaID is the ID of the JSON Schema to be used for validating the identity's traits.
    - `schema_url` string, required — SchemaURL is the URL of the endpoint where the identity's traits schema can be fetched from. format: url
    - `state` 'active' | 'inactive' — State is the identity's state. This value has currently no effect. active StateActive inactive StateInactive
    - `state_changed_at` string, date-time
    - `traits` IdentityTraits, required — Traits represent an identity's traits. The identity is able to create, modify, and delete traits in a self-service manner. The input will always be validated against the JSON Schema defined in `schema_url`.
    - `updated_at` string, date-time — UpdatedAt is a helper struct field for gobuffalo.pop.
    - `verifiable_addresses` VerifiableIdentityAddress[] — VerifiableAddresses contains all the addresses that can be verified by the user.
      - `created_at` string, date-time — When this entry was created
      - `id` string, uuid — The ID
      - `status` string, required — VerifiableAddressStatus must not exceed 16 characters as that is the limitation in the SQL Schema
      - `updated_at` string, date-time — When this entry was last updated
      - `value` string, required — The address value example foo@user.com
      - `verified` boolean, required — Indicates if the address has already been verified
      - `verified_at` string, date-time
      - `via` 'email' | 'sms', required — The delivery method
  - `session` Session — A Session
    - `active` boolean — Active state. If false the session is no longer active.
    - `authenticated_at` string, date-time — The Session Authentication Timestamp When this session was authenticated at. If multi-factor authentication was used this is the time when the last factor was authenticated (e.g. the TOTP code challenge was completed).
    - `authentication_methods` SessionAuthenticationMethod[] — A list of authenticators which were used to authenticate the session.
      - `aal` string — The authenticator assurance level can be one of "aal1", "aal2", or "aal3". A higher number means that it is harder for an attacker to compromise the account. Generally, "aal1" implies that one authentication factor was used while AAL2 implies that two factors (e.g. password + TOTP) have been used. To learn more about these levels please head over to: https://www.ory.com/kratos/docs/concepts/credentials
      - `completed_at` string, date-time — When the authentication challenge was completed.
      - `method` 'password' | 'oidc' | 'totp' | 'lookup_secret' | 'webauthn' | 'code' | 'passkey' | 'profile' | 'saml' | 'deviceauthn' | 'identifier_first' | 'link_recovery' | 'code_recovery' — The method used in this authenticator. password CredentialsTypePassword oidc CredentialsTypeOIDC totp CredentialsTypeTOTP lookup_secret CredentialsTypeLookup webauthn CredentialsTypeWebAuthn code CredentialsTypeCodeAuth passkey CredentialsTypePasskey profile CredentialsTypeProfile saml CredentialsTypeSAML deviceauthn CredentialsTypeDeviceAuthn identifier_first CredentialsTypeIdentifierFirst link_recovery CredentialsTypeRecoveryLink CredentialsTypeRecoveryLink is a special credential type linked to the link strategy (recovery flow). It is not used within the credentials object itself. code_recovery CredentialsTypeRecoveryCode
      - `organization` string — The Organization id used for authentication
      - `provider` string — OIDC or SAML provider id used for authentication
      - `upstream_acr` string — UpstreamACR is the `acr` claim reported by the upstream OIDC provider, if any. Populated only for OIDC login methods when the upstream ID token contained an `acr` claim.
      - `upstream_amr` string[] — UpstreamAMR is the `amr` claim reported by the upstream OIDC provider, if any. Populated only for OIDC login methods when the upstream ID token contained an `amr` claim.
    - `authenticator_assurance_level` string — The authenticator assurance level can be one of "aal1", "aal2", or "aal3". A higher number means that it is harder for an attacker to compromise the account. Generally, "aal1" implies that one authentication factor was used while AAL2 implies that two factors (e.g. password + TOTP) have been used. To learn more about these levels please head over to: https://www.ory.com/kratos/docs/concepts/credentials
    - `devices` SessionDevice[] — Devices has history of all endpoints where the session was used
      - `id` string, uuid, required — Device record ID
      - `ip_address` string — IPAddress of the client
      - `location` string — Geo Location corresponding to the IP Address
      - `user_agent` string — UserAgent of the client
    - `expires_at` string, date-time — The Session Expiry When this session expires at.
    - `id` string, uuid, required — Session ID
    - `identity` Identity — An [identity](https://www.ory.com/docs/kratos/concepts/identity-user-model) represents a (human) user in Ory.
      - `created_at` string, date-time — CreatedAt is a helper struct field for gobuffalo.pop.
      - `credentials` object — Credentials represents all credentials that can be used for authenticating this identity.
      - `external_id` string — ExternalID is an optional external ID of the identity. This is used to link the identity to an external system. If set, the external ID must be unique across all identities.
      - `id` string, uuid, required — ID is the identity's unique identifier. The Identity ID can not be changed and can not be chosen. This ensures future compatibility and optimization for distributed stores such as CockroachDB.
      - `metadata_admin` NullJsonRawMessage — NullJSONRawMessage represents a json.RawMessage that works well with JSON, SQL, and Swagger and is NULLable-
      - `metadata_public` NullJsonRawMessage — NullJSONRawMessage represents a json.RawMessage that works well with JSON, SQL, and Swagger and is NULLable-
      - `organization_id` NullUUID — NullUUID can be used with the standard sql package to represent a UUID value that can be NULL in the database.
        - `UUID` string, uuid
        - `Valid` boolean
      - `recovery_addresses` RecoveryIdentityAddress[] — RecoveryAddresses contains all the addresses that can be used to recover an identity.
        - `break_glass_for_organization` NullUUID — NullUUID can be used with the standard sql package to represent a UUID value that can be NULL in the database.
          - `UUID` string, uuid
          - `Valid` boolean
        - `created_at` string, date-time — CreatedAt is a helper struct field for gobuffalo.pop.
        - `id` string, uuid
        - `updated_at` string, date-time — UpdatedAt is a helper struct field for gobuffalo.pop.
        - `value` string, required
        - `via` string, required
      - `region` 'eu-central' | 'asia-northeast' | 'us-east' | 'us-west' | 'eu' | 'asia' | 'us' | 'global' — Region is the Ory Network region this identity is homed in. Set by the multi-region persister; empty on OSS and single-region deployments. eu-central EUCentral asia-northeast AsiaNorthEast us-east USEast us-west USWest eu EU asia Asia us US global Global
      - `schema_id` string, required — SchemaID is the ID of the JSON Schema to be used for validating the identity's traits.
      - `schema_url` string, required — SchemaURL is the URL of the endpoint where the identity's traits schema can be fetched from. format: url
      - `state` 'active' | 'inactive' — State is the identity's state. This value has currently no effect. active StateActive inactive StateInactive
      - `state_changed_at` string, date-time
      - `traits` IdentityTraits, required — Traits represent an identity's traits. The identity is able to create, modify, and delete traits in a self-service manner. The input will always be validated against the JSON Schema defined in `schema_url`.
      - `updated_at` string, date-time — UpdatedAt is a helper struct field for gobuffalo.pop.
      - `verifiable_addresses` VerifiableIdentityAddress[] — VerifiableAddresses contains all the addresses that can be verified by the user.
        - `created_at` string, date-time — When this entry was created
        - `id` string, uuid — The ID
        - `status` string, required — VerifiableAddressStatus must not exceed 16 characters as that is the limitation in the SQL Schema
        - `updated_at` string, date-time — When this entry was last updated
        - `value` string, required — The address value example foo@user.com
        - `verified` boolean, required — Indicates if the address has already been verified
        - `verified_at` string, date-time
        - `via` 'email' | 'sms', required — The delivery method
    - `issued_at` string, date-time — The Session Issuance Timestamp When this session was issued at. Usually equal or close to `authenticated_at`.
    - `tokenized` string — Tokenized is the tokenized (e.g. JWT) version of the session. It is only set when the `tokenize_as` query parameter was set to a valid tokenize template during calls to `/session/whoami`.
  - `session_token` string — The Session Token This field is only set when the session hook is configured as a post-registration hook. A session token is equivalent to a session cookie, but it can be sent in the HTTP Authorization Header: Authorization: bearer ${session-token} The session token is only issued for API flows, not for Browser flows!

## Other responses

- `303` — Empty responses are sent when, for example, resources are deleted. The HTTP status code for empty responses is typically 204.
- `400` — registrationFlow
- `410` — errorGeneric
- `422` — errorBrowserLocationChangeRequired
- `default` — errorGeneric

---

[API](https://skmtc.net/ory/apis/ory-kratos.md) · [All operations](https://skmtc.net/ory/apis/ory-kratos/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ory/ory-kratos/versions/cc87f41fbd6d/schema)