I'm new to the tunnelbroker service, so apologies if this is obvious.
I have created two tunnels to two different locations, and initially requested a /48 block to one of them. After configuring my systems, I decided that I needed the /48 on the other location, so I tried adding one. It said "Error: Maximum /48s requested. Please try again later.", so I assumed I can only have one /48 in total. Fine, I remove the /48 from the location where I don't need it, try again... "Error: Maximum /48s requested. Please try again later."
Now I get the error no matter which tunnel I try creating the /48 on. Did I screw up my only chance to set up a /48 block?
Solved by waiting 24h :)