Transaction not yet indexed

MLkn2vE6XFsHRfHUzeLT9AZEcS4pBtKVBrJzxSrnXPsevGKsFtZ5ehtpCQMAUBvUe55ZYpuRFkLtdv5MZrmmonQ

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