Hello everybody 

I'm looking for a way to create a selection list where I can specify the options, no options that have already been selected should appear in the list. It is about documenting IP addresses. We have a pool of IP addresses. As you can imagine, IP addresses must not be used more than once. If a server has already been assigned an IP address, we don't want the IP address to be available for selection when adding a new server. 

Is such a thing realisable? 

Best Regards 

AINDER