Transaction not yet indexed

Un99ffCMmDeUnhUc9cSdjuHmWxUaRJ4Nzgu8wpU8WijVQRwZ2Uegtb68y3fs5LZzBGaKCckdkyUqD1hHekoYwMB

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