This is maddening. To all the poor blokes who have had to deal with this idiotic "an invitation is already pending (1904)" b.s., you have my sympathies. I do not understand Bungie's prestidigitation. This should be easy, as in I send a request, the admin approves it and you're in the effing clan. DONE! But no. You have to send a request and then they have to approve it and then you have to log back in and set it, but then you can't because God only knows why. Holy hell... Should be one and done. Why the barnacle this is so complicated is beyond my capacity. ALOT of people with this issue and I haven't seen a solution yet.