When refreshing project in Eclipse UI, 'List Type' request will fail with the error message:
Release: 18.0
The change of the HFS keyword to USS in the core Endevor was not reflected in the signature for List Type CSV request in Web Services.
Problem #7323 resolved by RO88290 (18.0) - this PTF was sourced into Endevor 18.1 and 19.0