Transaction not yet indexed

666UMLnExo9q3QLZ9ZSvHzgCeTUAaZcvmqFDht4rjKigYZDQDVuwDqvwF5jPHA3uRuM1yomx8nTSAv2qzgT2inMo

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