Transaction not yet indexed

SMu18CXCtfXBF5jBA3KHfSC7369AVS8kr9KNe2gLxJYT6QV6HQNJs7Do4Gic2Q2HfycvFmeKbuEsBM1MUaSETsG

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