## 5.4.6  Enable Event Subscriptions
Event subscriptions identify the publishing application, the subscribing application, and the type of events that can flow between them. When the event subscription becomes active, the subscribing application immediately begins consuming events.
## Prerequisites
- You have Event Broker Integration Administrator authorizations.
- You have subscribed to the SAP Cloud Application Event Hub standard application plan (see Subscribe to the SAP Cloud Application Event Hub Application [page 65]).
- A formation of type Eventing Between SAP Cloud Systems was created and includes the subaccount where the SAP Cloud Application Event Hub application is subscribed (see Create Formations to Define the Event Sharing Context [page 67]).
- You have created communication arrangements based on the following communication scenarios in SAP S/4HANA Cloud:
- SAP\_COM\_0892 (SAP Cloud Application Event Hub Integration)
- SAP\_COM\_0884 (SAP Subscription Billing - Event Consumption Integration)
## Procedure
|   Step | Task                                                                                                                                       |
|--------|--------------------------------------------------------------------------------------------------------------------------------------------|
|      1 | In the subaccount in which you added SAP Cloud Application Event Hub, choose Services Instances and Subscriptions in the navigation panel. |
|      2 | In the Subscriptions table, choose the link next to SAP Cloud Application Event Hub.                                                       |
|      3 | After signing in, choose Subscriptions .                                                                                                   |
| Step   | Task                                                                                                                                                                                                                                                                  |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 4.     | From the table of event subscriptions, choose the tab All Available Subscriptions and select the subscription Replication of Subscriptions and Billing Forecasts from SAP Subscription Billing to SAP S/4HANA Cloud .                                                 |
|        |  Note If you can't select the row because it's grayed out, then you have an overlapping event subscription enabled. Refer to the Lifecycle section of Event Subscriptions in the SAP BTP documentation to see a list of situations when event subscriptions overlap. |
## Results
The Status indicator turns green, which indicates that the event subscription is active. The event subscription also displays in the My Subscriptions tab. Subscribing applications begin consuming events immediately.
##  Note
In some cases, you could experience a slight delay in connectivity while the subscriber associated with the event subscription is activated. Any delays are automatically resolved.