Transaction not yet indexed

MEx78RQcsmbhKLmUbBWfvVrfCnmJ4wpUedFBgNncARtoBJsXPKQSdBooR4taHYRTaT7cUnYyV9CpVpYGxXB7uYd

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