Transaction not yet indexed

UmMRBUF9pLEJ9bMEHSQYxpb4PciMSaFyeLa8ER1hLAvHD2AMwSzo4bH94wuzx9kK1WYd9LRMPVvLBnfPApEnee1

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