Errors/Chain errors
RelayerMissMatch
Check the argument values against the operation schema
The order's relayer allowlist is set but the account that submitted the execution transaction is not in it. Compare the extrinsic's signing account against the relayer list in the signed order payload.
Declared by the LimitOrders pallet; it classifies to the semantic code invalid_argument.
Remediation
Check the argument values against the operation schema
The same explanation is available in the terminal: btcli explain RelayerMissMatch.