Transaction not yet indexed

Q78XMttNpcSNJ1hxkDHp4w9A5wRbmQ7BPmvZo7X1KKrjLZMmeJpN7vdhwYZM4aKZk7vd2iu848z2NmPtSqqJAng

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