Transaction not yet indexed

MTu6ncKv63ux7vMWr2c2caG78C3DJ2vAebwjMaUCaK7aRzaGFeJxLpc2MSCxPhzGi6dbirn2da7TBzHM2hfUPh7

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