I haven't been able to get routing rules for any fares since yesterday, the window pops up but I get some sort of error:

For example:

INVLD CATEGORY >4FBWISFOXXXUXXXR7KN-UA#RTG


It's been this way a few airlines I've tried. Also, why can we only request routing rules once per minute and like 2 every 5 minutes? ExpertFlyer doesn't seem to have this limitation so I'm curious as to why KVS does.