Transaction not yet indexed

645h3HmSmTXrCLoZgNrATHtBgZRXR3RMMcgbA6K2ePQUaEk4RkcyumbuujGAeKSFPGqRyz8EX7y9eRXXJ1tsfNRn

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