Hi,

To get the user data from HP ALM QC version 15.x and 24.x I call the API:  /qcbin/rest/domains/DOMAIN_NAME/projects/PROJECT_NAME/customization/users

In the response I get 

<?xml version="1.0" encoding="UTF-8"?><Users>
<User FullName="admin" Name="admin">
<userAvatarCache>-1</userAvatarCache>
<description/>
<email/>
<phone/>
<UserActive>true</UserActive>
<userGroups/>
</User>
<User FullName="AutomationSyncUser" Name="automationsyncuser">
<userAvatarCache>-1</userAvatarCache>
<description/>
<email/>
<phone/>
<UserActive>true</UserActive>
<userGroups/>
</User>
<User FullName="AutomationUIUser" Name="automationuiuser">
<userAvatarCache>-1</userAvatarCache>
<description/>
<email/>
<phone/>
<UserActive>true</UserActive>
<userGroups/>
</User>
</Users>

I am using this API with admin creds though I am getting the empty emails. In the user management I have set the email IDs.

thanks.