Transaction not yet indexed

MM6UbSNQuU2ddRAJcEb22WAYFDNbzqQ7ntGAuV3zM12QDxpSpF8fVxw8ci6z4UYv7ZpskAyXFm5JLKCP9qoG6U5

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