Transaction not yet indexed

MLkbufDvhrHkmdKM1Qest1iYgiBE535uS4CWZpvdFwLG7RbjGNdRPa78UEu7CpADR3Uvxt16HA6jU3xdWNrq9Nq

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