diff --git a/README.md b/README.md
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@@ -10,10 +10,17 @@ The HTTP API offered by the UJSE is specified [here](https://git.code.tecnalia.c
 UJSE requires the following ACROSS components to be already installed:
 
 - [Transparency Dashboard Backend](https://git.code.tecnalia.com/across/public/citizen-front-end/transparency-dashboard/transparency-dashboard-ui): to get the list of given consents by each citizen and the status of them.
-- [Usage Control](https://git.code.tecnalia.com/across/public/citizen-data-ownership-and-usage-control/usage-control/Usagecontrol): to do the enforcement of the usage policies defined by the citizen  
+- [Usage Control](https://git.code.tecnalia.com/across/public/citizen-data-ownership-and-usage-control/usage-control/Usagecontrol): to do the enforcement of the usage policies defined by the citizen
+- [Service Catalogue](https://git.code.tecnalia.com/across/public/data-harmonization-and-connectors/service-registry/Public_Service_Catalog_ENG)
+- An Identity Server, as Keycloak, installed and configured with its corresponding realm and clients.
 
 To install the project, you need to have Docker and Docker-compose installed on your machine. If you don't have it, you can install it by following the instructions on the official Docker website.
 
+
+## Identity Server configuration
+A client named `ujse` and with the `citizen` role within the realm to be used for all the Across clients must be configured in the Identity Server.
+
+
 ## Installation
 Clone this repository: