any good reason for web service call?

manager's display name is available as a reference within workflow context

Thanks' - in this case I can use Manager Display Name - but I also in other cases neede more information about the manager.

Can there be a problem/error in thes schemas?

<GetUserInfo xmlns="http://schemas.microsoft.com/sharepoint/soap/directory/"><User ID="xxxx" Sid="S-1-5-21-675826976-885791422-1542849698-28822" Name="xxx xxx xxx" LoginName="domainxxxxxx" Email="xxx@bankdata.dk" Notes="" IsSiteAdmin="False"

Problem: I can see that is it only people where the manager and the deparment are createt after februar 1th.

(NB! I have changed the name og loginName with xxx in the exchampel)

hm, what info for example?

there is not much info you can get about user from this webservice.

can you see users you do not get response for in Site settings/User and groups? (on a site where you invoke webservice from!)