I have set up a PoA parachain network with predefined 2 authorities which are assigned to the two collators joining the network. So far I've figured out how to manually update the chain-spec collatorSelection section to add new collator keys, however, this requires network reset.

I've been trying to use "sudo" from the PolkadotJS app to add new collator keys, but I keep receiving error error: collatorSelection.ValidatorNotRegistered when performing sudo > collatorSelection > setInvulnerables -- also received the same error when executing registerAsCandidate extrinsic for the target collator account.

So far I didn't find an explicit document that explains the above, any help here would be highly appreciated.

1 Answer 1


You are seeing this error because you have not registered your new node as a validator candidate. See this guide with the steps to fix that: How to add new collators on a running parachain?

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