Remote link EP -> FES

Hello Community,

we run an EP 7.31/SP17 and try to consume remote Content provided by a Fiori-Frontend service.

all I receive in Portal's Content Studio is "no content found":

the URL collecting the Frontent Catalogue delivers XML like this:

I cannot judge whether this is a valid response from Frontendserver. Is there somewhere a valid sample to use as reference ?

thank you in advance.

Karl-Heinz.