Transaction not yet indexed

ngkEfbH9pm5Rv5hjQJiZJKqrd2bBPiB9FvdpFe5vZBqLTefmXLuvU6BeosHGDf9SXMfbgPoGhCKVb2cPgkSokxi

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