Transaction not yet indexed

53U2QdGMLfkWTaLrULETAhbC2ESwwrbmE88qoK1yK6Lj8etqpGhCS8q1wF9AvXhq23JZFRouPR9QGMgiFD7xYNqe

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