# Issue with finding client identifier for CIS2 authentication

**URL:** <https://developer.community.nhs.uk/t/issue-with-finding-client-identifier-for-cis2-authentication/6095>\
**Category:** Care Identity Service (CIS)\
**Tags:** authentication, onboarding\
**Created:** [7 June 2025 11:38 UTC](https://developer.community.nhs.uk/t/issue-with-finding-client-identifier-for-cis2-authentication/6095 "2025-06-07T11:38:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Faraz\_Malik](https://avatars.discourse-cdn.com/v4/letter/f/f14d63/32.png) [@Faraz\_Malik](https://developer.community.nhs.uk/u/Faraz_Malik)\
**Post date:** [7 June 2025 11:38 UTC](https://developer.community.nhs.uk/t/issue-with-finding-client-identifier-for-cis2-authentication/6095/1 "2025-06-07T11:38:25Z")

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We’ve successfully onboarded our application on the **Developer hub** , and connected **Identity Service (Development)**.

However, we can only see our Application ID and API key. There is no client identifier.

We have seen there is a `registration_endpoint` in the configuration information (from accessing the appropriate configuration document at the well-known endpoints).

However it is unclear how to use this to obtain the client identifier for our application. It is also unclear if the client identifier is a one-off, or must be obtained every time before the user can begin authenticating. The information present on the [**Registration**](https://digital.nhs.uk/services/care-identity-service/applications-and-services/cis2-authentication/guidance-for-developers/detailed-guidance/registration) page is insufficient.

NHS Digital \>  
**…** \>  
CIS2 Authentication \>  
Guidance for developers \>  
Detailed guidance \>  
Registration \> **Client Identifier**

Do we retrieve our client ID for each application environment by contacting [england.nhscareidentityauthentication@nhs.net](mailto:england.nhscareidentityauthentication@nhs.net)?

(ref. no: **NHSDID0425** )

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**Author:** ![john.lister3](https://avatars.discourse-cdn.com/v4/letter/j/a587f6/32.png) [@john.lister3](https://developer.community.nhs.uk/u/john.lister3)\
**Post date:** [7 June 2025 12:49 UTC](https://developer.community.nhs.uk/t/issue-with-finding-client-identifier-for-cis2-authentication/6095/2 "2025-06-07T12:49:55Z")

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Hi, you would need to contact the onboarding team who will help in setting up CIS2 client IDs. In our INT environment you can use the “connection manager” too to automatically configure clients, but would need to speak to the onboarding team to be set up