Customer Invoice Hold

Hi AR Gurus,

we have few orders which have been shipped and now they are in the AR interface table. they are in the interface table for quite a few days now and I came to know that they are on tax hold (some other kind of holds)  and hence the autoinvoice in not creating the AR invoices for them. I was just wondering how can you put a hold on the AR interface lines, is this a custom functionality or if this is a standard functionality to apply holds on the interface lines.

Thanks