Transaction not yet indexed

UTxn1MMKDAtt3SiKBTV2GKZWX1U9FN3eBzoNa19wtADR5gY3pbeHKHP6uZuUZRqNBH9XyFJMsD16PqJBgchjHr6

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