Transaction not yet indexed

2ndK51MkUByaQi97rPio6ewyeehzV9THsZcfTb8vzHYqNkTsdz8EQf6e2C7aDSxeYB4mMyyW6M5mtZ9x5bPHZFX9

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