Transaction not yet indexed

MDKU2KHfRYtyi4YJRDhsGjnyvsudsZSwk6pvfnSb2vd6rQi8aN8p4Z8RXZkMf7YvC6YMdLdJmDdajHGdE7bs9JZ

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