URL Path
A URL (Uniform Resource Locator) path identifies the REST API endpoint that you want to call. A complete URL path consists of the domain name and the endpoint path:
https://<domain>/<endpoint-path>The <domain> is the REST server domain, for example:
https://chat_rest_server_domain.comThe <endpoint-path> is the relative path of the resource endpoint you're working with.
 For example, for requestEngagement endpoint, the endpoint path is as follows: 
               
/engagement/api/consumer/sdi_11_20_18_2022_21-3586727808788512-Fusion/v1/requestEngagementWhere: 
                  
               
               - sdi_11_20_18_2022_21-3586727808788512-Fusionis the value of the- fqSiteName. The- fqSiteNameis the name of the site returned in the response of the initial call to- chatAuthenticateendpoint in Engagement Cloud
- v1is the valid value for the API version
So, the combined request URL for the requestEngagement endpoint becomes:
               
https://chat_rest_server_domain.com/engagement/api/consumer/sdi_11_20_18_2022_21-3586727808788512-Fusion/v1/requestEngagementIf a pool ID is configured for the site then you need to specify it in the request URL, as follows:
https://chat_rest_server_domain.com/engagement/api/consumer/sdi_11_20_18_2022_21-3586727808788512-Fusion/v1/requestEngagement?pool=353:2Where the pool ID is 353:2. The pool ID indicates the ID of the cluster
where the chat service is running.