Transaction not yet indexed

5b1gBUU2ABfSGuHT36g3LKifyHLpNBPwEP7EHcSrGpvToLqEBqA3sTdeTS1kNtNkRyk3cV9S8MQijkq9YNyjF3UJ

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.