Transaction not yet indexed

mdfvtCUh5nm9my5vvLfVeUVhuBmeGLz72bE69e65J6ViCx3epkLToTrCF7JrJsPgAo5hDKL2zP8uuCm5j5SP539

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