# Event Subscription - v4.0
# Overview
The Event Subscription resource is used by a TPP to subscribe to events with an ASPSP.
This resource description should be read in conjunction with a compatible Event Notification Subscription Profile.
# Endpoints
A TPP will set up and maintain its event subscription details (URL, event types and version number) using the event-subscription resource.
| Resource | HTTP Operation | Endpoint | Mandatory ? | Scope | Grant Type | Message Signing | Idempotency Key | Request Object | Response Object |
|---|---|---|---|---|---|---|---|---|---|
| event-subscription | POST | POST /event-subscriptions | Optional | accounts payments fundsconfirmations | Client Credentials | Signed Request Signed Response | No | OBEventSubscription1 | OBEventSubscriptionResponse1 |
| event-subscription | GET | GET /event-subscriptions | Mandatory (if resource POST implemented) | accounts payments fundsconfirmations | Client Credentials | Signed Response | No | n/a | OBEventSubscriptionsResponse1 |
| event-subscription | PUT | PUT /event-subscriptions/{EventSubscriptionId} | Conditional (See Note 1) | accounts payments fundsconfirmations | Client Credentials | Signed Request Signed Response | No | OBEventSubscriptionResponse1 | OBEventSubscriptionResponse1 |
| event-subscription | DELETE | DELETE /event-subscriptions/{EventSubscriptionId} | Conditional (See Note 1) | accounts payments fundsconfirmations | Client Credentials | n/a | No | n/a | n/a |
# Note 1
Implementation for an ASPSP is:
Optional, where both the following are true:
- The ASPSP supports aggregated polling only
- The ASPSP only supports a single event type for aggregated polling
Mandatory, when the above is not true and ASPSP implemented
POST /event-subscriptions
# POST /event-subscriptions
The API endpoint allows the TPP to ask an ASPSP to create a new event-subscription resource.
- The POST action allows the TPP to register an event subscription for a TPP to access event notifications.
- The ASPSP creates the event-subscription resource and responds with a unique EventSubscriptionId to refer to the resource.
- An ASPSP must respond with a 409 error if an event-subscription exists for that TPP.
# GET /event-subscriptions
The API endpoint allows the TPP to ask an ASPSP to retrieve its event-subscription resource.
- The ASPSP retrieves the event-subscription resource and responds with the resource.
# PUT /event-subscriptions/{EventSubscriptionId}
The API endpoint allows the TPP to ask an ASPSP to update an event-subscription resource.
- The PUT action allows the TPP to update an event subscription for a TPP to access event notifications.
- The ASPSP updates the event-subscription resource and responds with the updated resource.
# DELETE /event-subscriptions/{EventSubscriptionId}
The API endpoint allows the TPP to ask an ASPSP to delete an event-subscription resource.
- The ASPSP deletes the event-subscription resource.
# Data Model
# Event Subscription - Request
The OBEventSubscription1 object will be used for the call to:
- POST /event-subscriptions
# UML Diagram
# Notes
For the OBEventSubscription1 object:
TPP must not provide CallbackUrl, when subscribing for Aggregated Polling only
TPP must provide the Version of Resources, for which they want to subscribe the events for. E.g. if supplied with value "3.1", TPP indicates the subscription for the change in state of resources created in v3.1 version
EventTypes usage:
- TPPs may provide a list of event types to subscribe to specific events.
- TPPs may omit this field to subscribe to all supported events.
# Data Dictionary
| Name | Occurrence | XPath | EnhancedDefinition | Class | Codes | Pattern |
|---|---|---|---|---|---|---|
| OBEventSubscription1 | OBEventSubscription1 | OBEventSubscription1 | ||||
| Data | 1..1 | OBEventSubscription1/Data | OBEventSubscriptionData1 | |||
| CallbackUrl | 0..1 | OBEventSubscription1/Data/CallbackUrl | Callback URL for a TPP hosted service. Will be used by ASPSPs, in conjunction with the resource name, to construct a URL to send event notifications to. | xs:anyURI | ||
| Version | 1..1 | OBEventSubscription1/Data/Version | Version for the event notification. | Max10Text | ||
| EventTypes | 0..* | OBEventSubscription1/Data/EventTypes | Array of event types the subscription applies to. | OBEventType1Code |
# Event Subscription - Response
The OBEventSubscriptionResponse1 object will be used for a response to a call to:
- POST /event-subscriptions
- PUT /event-subscriptions/{EventSubscriptionId}
The OBEventSubscriptionResponse1 object will also be used for the call to:
- PUT /event-subscriptions
# UML
# Data Dictionary
| Name | Occurrence | XPath | EnhancedDefinition | Class | Codes | Pattern |
|---|---|---|---|---|---|---|
| OBEventSubscriptionResponse1 | OBEventSubscriptionResponse1 | OBEventSubscriptionResponse1 | ||||
| Data | 1..1 | OBEventSubscriptionResponse1/Data | OBEventSubscriptionResponseData1 | |||
| EventSubscriptionId | 1..1 | OBEventSubscriptionResponse1/Data/EventSubscriptionId | Unique identification as assigned by the ASPSP to uniquely identify the callback URL resource. | Max40Text | ||
| CallbackUrl | 0..1 | OBEventSubscriptionResponse1/Data/CallbackUrl | Callback URL for a TPP hosted service. Will be used by ASPSPs, in conjunction with the resource name, to construct a URL to send event notifications to. | xs:anyURI | ||
| Version | 1..1 | OBEventSubscriptionResponse1/Data/Version | Version for the event notification. | Max10Text | ||
| EventTypes | 0..* | OBEventSubscriptionResponse1/Data/EventTypes | Array of event types the subscription applies to. | OBEventType1Code |
# Event Subscriptions - Response
The OBEventSubscriptionsResponse1 object will be used for a response to a call to:
- GET /event-subscriptions
# UML
# Data Dictionary
| Name | Occurrence | XPath | EnhancedDefinition | Class | Codes | Pattern |
|---|---|---|---|---|---|---|
| OBEventSubscriptionsResponse1 | OBEventSubscriptionsResponse1 | OBEventSubscriptionsResponse1 | ||||
| Data | 1..1 | OBEventSubscriptionsResponse1/Data | OBEventSubscriptionsResponseData1 | |||
| EventSubscription | 0..* | OBEventSubscriptionsResponse1/Data/EventSubscription | OBEventSubscriptionResponseData1 | |||
| EventSubscriptionId | 1..1 | OBEventSubscriptionsResponse1/Data/EventSubscription/EventSubscriptionId | Unique identification as assigned by the ASPSP to uniquely identify the callback url resource. | Max40Text | ||
| Url | 0..1 | OBEventSubscriptionsResponse1/Data/EventSubscription/Url | Callback URL for a TPP hosted service. Will be used by ASPSPs, in conjunction with the resource name, to construct a URL to send event notifications to. | xs:anyURI | ||
| Version | 1..1 | OBEventSubscriptionsResponse1/Data/EventSubscription/Version | Version for the event notification. | Max10Text | ||
| EventTypes | 0..* | OBEventSubscriptionsResponse1/Data/EventSubscription/EventTypes | Array of event types the subscription applies to. | OBEventType1Code |
# Usage Examples
# Create Event Subscription
# POST Event Subscription Request
POST /event-subscriptions HTTP/1.1
Authorization: Bearer 2YotnFZFEjr1zCsicMWpAA
x-jws-signature: TGlmZSdzIGEgam91cm5leSBub3QgYSBkZXN0aW5hdGlvbiA=..T2ggZ29vZCBldmVuaW5nIG1yIHR5bGVyIGdvaW5nIGRvd24gPw==
x-fapi-interaction-id: 86ebcd82-8e38-4f2d-a79c-965b41d15865
Content-Type: application/json
Accept: application/json
{
"Data": {
"CallbackUrl": "https://tpp.com/open-banking/v4.0/event-notifications",
"Version": "4.0"
}
}
# POST Event Subscription Response
HTTP/1.1 201 Created
x-jws-signature: V2hhdCB3ZSBnb3QgaGVyZQ0K..aXMgZmFpbHVyZSB0byBjb21tdW5pY2F0ZQ0K
x-fapi-interaction-id: 86ebcd82-8e38-4f2d-a79c-965b41d15865
Content-Type: application/json
{
"Data": {
"EventSubscriptionId": "CB-101",
"CallbackUrl": "https://tpp.com/open-banking/v4.0/event-notifications",
"Version": "4.0"
},
"Links": {
"Self": "https://api.alphabank.com/open-banking/v4.0/event-subscriptions/CB-101"
},
"Meta": {}
}
# Get Event Subscriptions
# GET Event Subscription Request
GET /event-subscriptions HTTP/1.1
Authorization: Bearer 2YotnFZFEjr1zCsicMWpAA
x-fapi-interaction-id: 86ebcd82-8e38-4f2d-a79c-965b41d15865
Accept: application/json
# GET Event Subscription Response
GET/1.1 200 OK
x-jws-signature: V2hhdCB3ZSBnb3QgaGVyZQ0K..aXMgZmFpbHVyZSB0byBjb21tdW5pY2F0ZQ0K
x-fapi-interaction-id: 86ebcd82-8e38-4f2d-a79c-965b41d15865
Content-Type: application/json
{
"Data": {
"EventSubscription": [{
"EventSubscriptionId": "CB-101",
"CallbackUrl": "https://tpp.com/open-banking/v4.0/event-notifications",
"Version": "4.0"
}]
},
"Links": {
"Self": "https://api.alphabank.com/open-banking/v4.0/event-subscriptions/"
},
"Meta": {}
}