Transaction not yet indexed

1mc78wUgbXjAZ3V8jeG1Mnv94ERzCv4E48CYtvMZtHKTy7ZVpyi5UpBhFGBGmVAaQATxoLqGKD1AGmg2CUQQycE

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