Transaction not yet indexed

MeEfF21hFSo5Zkqgjy7jAP9SzDkUJr8doTBQpnTEUXoQ6MbpbuEPoqBwiVeSxtcAnBgr4QLYGo7TU4KEk2pGZLS

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