Human readable message if maximum outputs reached

src/cryptonote_basic/cryptonote_format_utils.cpp

@@ -389,6 +389,7 @@ namespace cryptonote
     for (const auto &bp: rv.p.bulletproofs)
       nlr += bp.L.size() * 2;
     const size_t bp_size = 32 * (9 + nlr);
+    CHECK_AND_ASSERT_THROW_MES_L1(n_outputs <= BULLETPROOF_MAX_OUTPUTS, "maximum number of outputs is " + std::to_string(BULLETPROOF_MAX_OUTPUTS) + " per transaction");
     CHECK_AND_ASSERT_THROW_MES_L1(bp_base * n_padded_outputs >= bp_size, "Invalid bulletproof clawback");
     const uint64_t bp_clawback = (bp_base * n_padded_outputs - bp_size) * 4 / 5;
     CHECK_AND_ASSERT_THROW_MES_L1(bp_clawback <= std::numeric_limits<uint64_t>::max() - blob_size, "Weight overflow");