Transaction not yet indexed

A51tkugh2TjsfBUiMHJTEV8kKNCgtHzx9k4AB95Z4eT3BPhDNpQNAWGxCKqRs7VFxoHKPWHsoimA7MZMpCC4Toj

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