Transaction not yet indexed

MDffUCbmG3geQZUGkptXCwiHhPtamZrF8UZ3Ap6J48rTMQjDdbwqc5j1V4fMdfADb2TYSujAtdnZb6urgBNfMeV

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