CONTRACT_NOT_FOUND with Daml Script across multiple nodes

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I just found this post by @cocreature.

Note that there is no automatic synchronisation between participants however. So if you submit a transaction on one participant it will not block until that transaction is visible on the other participant. You can do things like poll for a contract id created in that transaction to appear on the other participant via queryContractId to synchronize manually.

waitForCid : Template t => Party -> ContractId t -> Script ()
waitForCid p cid = do
  r <- queryContractId p cid
  case r of
    None -> do
      sleep (seconds 1)
      waitForCid p cid
    Some _ -> pure ()

I opened Easier multi-participant synchronization in Daml Script · Issue #10618 · digital-asset/daml · GitHub to improve the UX for synchronization in Daml Script.

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