Transaction not yet indexed

MUn1RSRWXuj2sc7oYZLTcuU7SEP3xBpj8R2rECSpgiBj2big97Q39gC7KRgJx4mtuhoH5j3bvAHxSWCCvp7b5WM

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