RFC change reflaction in VC

Hi All
We develop application using Visual composer.
The connection to backend system (R3) is via system which configured in portal.
The problem is that when some change has done in RFC in R3, the changes are not reflected in VC for several hours. 
Thanks for advance
Eli

Hi Anja,
I believe you realize that I tried to refresh by right click and  I see the message "Fetching service metadata".
But the changes made in the   RFC or table data in R3, Do not get to the service (RFC) on VC.
The changes are reflected in VC after several hours.
I also tried to delete the RFC from the  iView  and look for it in the dictionary data
And pull it renews and I get the message " Fetching service metadata "
Still, the updates do not come in to the RFC on iView.
I hope that the case and the explanation clear enough.
Regards
Eli

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