Transaction not yet indexed

MfNbJ3GvaeTaMeUKK2AByJqYKaqner2rFv6Y7U18aFBNYPbXtex2LURHThtnfMGVjbNHp2NrZzHcESoNAaLRRL9

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