diff --git a/api/errors.py b/api/errors.py
new file mode 100644
index 00000000..cf577437
--- /dev/null
+++ b/api/errors.py
@@ -0,0 +1,116 @@
+ERRORS = {
+    # 1000 - Bad request
+    1000: "You are already maker of an active order",
+    1001: "You are already taker of an active order",
+    1002: "You are already taking an active order",
+    1003: "You are still pending a payment from a recent order",
+    1004: "Your order is too big. It is worth {order_amount} Sats now, but the limit is {max_order_size} Sats",
+    1005: "Your order is too small. It is worth {order_amount} Sats now, but the limit is {min_order_size} Sats",
+    1006: "Maximum range amount must be at least 50 percent higher than the minimum amount",
+    1007: "Your order maximum amount is too big. It is worth {max_sats} Sats now, but the limit is {max_order_size} Sats",
+    1008: "Your order minimum amount is too small. It is worth {min_sats} Sats now, but the limit is {min_order_size} Sats",
+    1009: "Your order amount range is too large. Max amount can only be 15 times bigger than min amount",
+    1010: "The coordinator does not support orders in {country}",
+    1011: "The amount specified is outside the range specified by the maker",
+    1012: "You need to wait {time_out} seconds to take an order",
+    1013: "You cannot open a dispute of this order at this stage",
+    1014: "Only orders in dispute accept dispute statements",
+    1015: "Only the buyer of this order can provide a payout address.",
+    1016: "You cannot submit an address now.",
+    1017: "Only the buyer of this order can provide a buyer invoice.",
+    1018: "Wait for your order to be taken.",
+    1019: "You cannot submit an invoice while bonds are not locked.",
+    1020: "Current order status is {order_status}, not {cancel_status}.",
+    1021: "You cannot cancel this order",
+    1022: "Invoice expired. You did not confirm publishing the order in time. Make a new order.",
+    1023: "The lightning node is down. Write in the Telegram group to make sure the staff is aware.",
+    1024: "This is weird, RoboSats' lightning wallet is locked. Check in the Telegram group, maybe the staff has died.",
+    1025: "Order expired. You did not confirm taking the order in time.",
+    1026: "Invoice expired. You did not send the escrow in time.",
+    1027: "You cannot confirm to have received the fiat before it is confirmed to be sent by the buyer.",
+    1028: "Woah, something broke badly. Report in the public channels, or open a Github Issue.",
+    1029: "You cannot confirm the fiat payment at this stage",
+    1030: "Only the buyer can undo the fiat sent confirmation.",
+    1031: "Only orders in Chat and with fiat sent confirmed can be reverted.",
+    1032: "You cannot pause or unpause an order you did not make",
+    1033: "You can only pause/unpause an order that is either public or paused",
+    1034: "Your PGP public key does not seem valid.\nStderr: {import_pub_result_stderr}\n"
+        + "ReturnCode: {import_pub_result_returncode}\nSummary: {import_pub_result_summary}\n"
+        + "Results: {import_pub_result_results}\nImported: {import_pub_result_imported}\n",
+    1035: "Your PGP encrypted private key does not seem valid.\nStderr: {import_priv_result_stderr}\n"
+        + "ReturnCode: {import_priv_result_returncode}\nSummary: {import_priv_result_summary}\n"
+        + "Results: {import_priv_result.results}\nSec Imported: {import_priv_result_sec_imported}\n",
+    1036: "Woops! It seems you do not have a robot avatar",
+    1037: "The RoboSats {coordinator_alias} coordinator book is at full capacity! Current limit is {max_public_orders} orders",
+    1038: "You must specify min_amount and max_amount for a range order",
+    1039: "You must specify an order amount",
+    1040: "You must have a robot avatar to see the order details",
+    1041: "Order ID parameter not found in request",
+    1042: "Invalid Order Id",
+    1043: "This order has been cancelled",
+    1044: "This order is not available",
+    1045: "Wrong password",
+    1046: "This order is not public anymore.",
+    1047: "You are not a participant in this order",
+    1048: "The PGP signed cleartext message is not valid.",
+    1049: "The Robotic Satoshis working in the warehouse did not understand you. "
+        + "Please, fill a Bug Issue in Github https://github.com/RoboSats/robosats/issues",
+    1050: "Invalid date format",
+    1051: "More than 5000 market ticks have been found. Please, narrow the date range",
+    1052: "Robot has no finished order",
+    1053: "Wrong hex pubkey",
+
+    # 2000 - Bad statement
+    2000: "The statement and chat logs are longer than 50,000 characters",
+    2001: "The statement is too short. Make sure to be thorough.",
+
+    # 3000 - Bad invoice
+    3000: "You submitted an empty invoice",
+    3001: "You can only submit an invoice after expiration or 3 failed attempts",
+    3002: "You must submit a NEW invoice",
+    3003: "You have not earned rewards",
+    3004: "Give me a new invoice",
+    3005: "Invoice payment failure: {failure_reason}",
+
+    # 4000 - Bad address
+    4000: "You submitted an empty address",
+    4001: "The mining fee is too low. Must be higher than {min_mining_fee_rate} Sat/vbyte",
+    4002: "The mining fee is too high, must be less than 500 Sats/vbyte",
+    4003: "The amount remaining after subtracting mining fee is close to dust limit.",
+    4004: "Invalid address",
+    4005: "Unable to validate address, check bitcoind backend",
+
+    # 5000 - Bad summary
+    5000: "Order has not finished yet",
+
+    # 6000 - Chat bad request
+    6000: "Order ID does not exist",
+    6001: "You are not participant in this order",
+    6002: "Order is not in chat status",
+    6003: "Invalid serializer",
+
+    # 7000 - Middlewares bad request
+    7000: "Robot token SHA256 was provided in the header. However it is not a valid 39 or 40 characters Base91 string.",
+    7001: "On the first request to a RoboSats coordinator, you must provide as well a valid public and encrypted private PGP keys and a nostr pubkey",
+    7002: "Invalid keys: {bad_keys_context}",
+}
+
+def new_error(code: int, parameters: dict = None) -> dict:
+    message = ERRORS[code]
+    if parameters is not None:
+        message = message.format(**parameters)
+    
+    message_field_name = "bad_request"
+    if 2000 <= code < 3000:
+        message_field_name = "bad_statement"
+    if 3000 <= code < 4000:
+        message_field_name = "bad_invoice"
+    if 4000 <= code < 5000:
+        message_field_name = "bad_address"
+    if 5000 <= code < 6000:
+        message_field_name = "bad_summary"
+
+    return {
+        "error_code": code,
+        message_field_name: message,
+    }
\ No newline at end of file
diff --git a/api/tests/test_errors.py b/api/tests/test_errors.py
new file mode 100644
index 00000000..b0df7b8f
--- /dev/null
+++ b/api/tests/test_errors.py
@@ -0,0 +1,62 @@
+from api.errors import ERRORS, new_error
+
+from django.test import TestCase
+
+
+class TestErrors(TestCase):
+    def test_new_error(self):
+        error_code = 1000
+        error = new_error(error_code)
+
+        self.assertEqual(error["error_code"], error_code)
+        self.assertEqual(error["bad_request"], ERRORS[error_code])
+
+    def test_new_error_bad_statement(self):
+        error_code = 2000
+        error = new_error(error_code)
+
+        self.assertEqual(error["error_code"], error_code)
+        self.assertEqual(error["bad_statement"], ERRORS[error_code])
+
+    def test_new_error_bad_invoice(self):
+        error_code = 3000
+        error = new_error(error_code)
+
+        self.assertEqual(error["error_code"], error_code)
+        self.assertEqual(error["bad_invoice"], ERRORS[error_code])
+
+    def test_new_error_bad_address(self):
+        error_code = 4000
+        error = new_error(error_code)
+
+        self.assertEqual(error["error_code"], error_code)
+        self.assertEqual(error["bad_address"], ERRORS[error_code])
+    
+    def test_new_error_bad_summary(self):
+        error_code = 5000
+        error = new_error(error_code)
+
+        self.assertEqual(error["error_code"], error_code)
+        self.assertEqual(error["bad_summary"], ERRORS[error_code])
+
+    def test_new_error_chat(self):
+        error_code = 6000
+        error = new_error(error_code)
+
+        self.assertEqual(error["error_code"], error_code)
+        self.assertEqual(error["bad_request"], ERRORS[error_code])
+    
+    def test_new_error_middleware(self):
+        error_code = 7000
+        error = new_error(error_code)
+
+        self.assertEqual(error["error_code"], error_code)
+        self.assertEqual(error["bad_request"], ERRORS[error_code])
+
+    def test_new_error_parametrized(self):
+        error_code = 4001
+        min_mining_fee_rate = 5
+        error = new_error(error_code, {"min_mining_fee_rate": 5})
+
+        self.assertEqual(error["error_code"], error_code)
+        self.assertEqual(error["bad_address"], f"The mining fee is too low. Must be higher than {min_mining_fee_rate} Sat/vbyte")
\ No newline at end of file