Transaction not yet indexed

51ErJ2qaoaEiSxtfotSPNvjcGaMLJDggP687VfoKHrCpd7mrAmPmTLViyfxaKJkRSLF7oohmrPJWVi7QmajF9QAg

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