Transaction not yet indexed

UUN9vcrLuunYHtEXHve3s3LDnHDtWHYtqnFmY4oQUiR3ERq2we8Jg3egJ9xKkULcXmJXpZs3x6kzYvPwurj1oFZ

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