Update index.md Salesforce Auth limitation

Author: lizkane222

src/connections/destinations/catalog/actions-salesforce/index.md

@@ -36,6 +36,11 @@ Before you connect Segment to Salesforce, please ensure you have a Salesforce ac
 6. Follow the steps in the Destinations Actions documentation on [Customizing mappings](/docs/connections/destinations/actions/#customizing-mappings). You must select which Event Types and/or Event Names will trigger each mapping.
 7. Enable the destination and configured mappings.
 
+> info "Authenticate with Salesforce"
+> Salesforce (Actions) requires OAuth based authentication. Salesforce limits the number of apps (destinations) a single user can grant (authorize). A single user can connect five Salesforce destinations, but upon connecting a sixth destination, the oldest destination's authorization is revoked. If the same user reauthorizes that same destination, this same behavior will occur on the next oldest destination that was authorized, and so on. To prevent this behavior, ensure that a different user with the same Salesforce permissions connects any new Salesforce destinations.
+> _For additional information on this Salesforce limitation, please see this documentation [Manage OAuth-Enabled Connected Apps Access to Your Data](https://help.salesforce.com/s/articleView?id=sf.remoteaccess_request_manage.htm&type=5#:~:text=NOTE,impact%20your%20org.)._
+
+
 {% include components/actions-fields.html %}
 
 ## Configuration options