Transaction not yet indexed

5Xpu51vPUYJbchCGjjXNRqTfJDkAG2mu1q7omnzvCMRCSKsQvmPMpQMSKToFb7vAuhCLLPx5pQRZveaSCKbFVZ1C

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