Transaction not yet indexed

MTLnx28p8JcA4sk2J8AfHc4mfJdJggiw4TS98mNjGbHmhNZdhmTuPjWTYPsNjDoJoJwhfspJSUKXrTGoZ2UYCV4

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