it wont let us register a parachain id on rococo the nextFreeId is "3,026" and its already taken from Bajun Network

"system.ExtrinsicFailed registrar.AlreadyRegistered" when tx is submitted


the chain would need sudo intervention to fix the slots and we can't post a issue on subport. See here for a previous occurrence of the same issue - Provided next available para id is already registered

  • I’m voting to close this question because the problem is now resolved
    – Nuke
    Commented Jun 12, 2022 at 22:46

1 Answer 1


This will be resolved on Rococo shortly by moving to give out IDs of higher number than already registered ones, likely in the 4000s. I will also opened up blank issues on subport for Rococo specifically.

  • 2
    Seems to be all ok now - the nextFreeId is 4,000 now. (Checked by querying the state)
    – Jaco
    Commented Jun 12, 2022 at 11:26

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