1 files changed, 33 insertions, 0 deletions
diff --git a/packages/contracts/src/2.0.0/forwarder/MixinErrorMessages.sol b/packages/contracts/src/2.0.0/forwarder/MixinErrorMessages.sol
new file mode 100644
index 000000000..c2a6ea0a4
--- /dev/null
+++ b/packages/contracts/src/2.0.0/forwarder/MixinErrorMessages.sol
@@ -0,0 +1,33 @@
+/*
+
+  Copyright 2018 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.4.24;
+
+/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons.
+contract MixinErrorMessages {
+    string constant VALUE_GREATER_THAN_ZERO = "VALUE_GREATER_THAN_ZERO";
+    string constant FEE_PROPORTION_TOO_LARGE = "FEE_PROPORTION_TOO_LARGE";
+    string constant TAKER_ASSET_ZRX_REQUIRED = "TAKER_ASSET_ZRX_REQUIRED";
+    string constant TAKER_ASSET_WETH_REQUIRED = "TAKER_ASSET_WETH_REQUIRED";
+    string constant SAME_ASSET_TYPE_REQUIRED = "SAME_ASSET_TYPE_REQUIRED";
+    string constant UNACCEPTABLE_THRESHOLD = "UNACCEPTABLE_THRESHOLD";
+    string constant UNSUPPORTED_TOKEN_PROXY = "UNSUPPORTED_TOKEN_PROXY";
+    string constant ASSET_AMOUNT_MATCH_ORDER_SIZE = "ASSET_AMOUNT_MUST_MATCH_ORDER_SIZE";
+    string constant DEFAULT_FUNCTION_WETH_CONTRACT_ONLY = "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY";
+    string constant INVALID_MSG_VALUE = "INVALID_MSG_VALUE";
+}