Transaction not yet indexed

1cKSz8t7eKZVMvFovvuk3cg7EjjFN1AmGseKU7mziZw3RrHTFbdjvQCk1NRbuPmqG4e5Ws8LvTe7bCEuqoG5Eq1

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