Transaction not yet indexed

LETTA8kLFCcQP9Rsdzrz35htazDUkzgJsThcrkncpq9N3HgfCfG3FpTwofE2xrEAg5hXVSTpVmRsFDchFSNz3Qp

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