Transaction not yet indexed

CUu5b7K2zkYXRdyCLerzvjeAiD3XT8FffbecBnEbLLe5Q3aLhfUcEC1mQN6B4MMPsYZAi3cEQoFvbW1XeW9sPw4

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