Hi Robert,
many thanks for your answer. The url without port 57772 and with port 80 result in a 404 error page. But I must correct myself: we are using IIS not Apache (the Apache module version is only shown in the Cachè-CSP-Gateway-Management page).
I have read here in another post (https://community.intersystems.com/post/fixedcall-rest-service-csp-gatew...) that IIS needs an additional file type mapping (*) for REST services. In our system under "Default Web Site" there are for CSPms configured the types csp and cls only. Before I add a wildcard * mapping: are there any considerations about security or system behavior or even system breakdown? (I'm not experienced in IIS configuration...)

Thanks,

Stefan