Transaction not yet indexed

5ffmLkEEUS4iGQPsK2k3QxHnh3hnoEHNBHr4n1VMabrXzQszpXsv1FPRz8w3Z76BZGdkJQ3gfoTKcU4KbZHeyCR4

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