Transaction not yet indexed

MU1f6UbytLoqi55Ao7Qg4NZFcVCNWmCBAENQ5dCYUVNQjPmaqQJjGNMjAV6FwZ4WdnTPo89C4W1JGR2eqwiGPSa

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