Transaction not yet indexed

642UN5JHFpAcRqmeDvTuKkXnx8wz8UouytnSdJBob3uVbW6ruFqgSSrX3qetMe2iPHERT6M8ZX5JnhsRDCR6i4cq

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