diff --git a/precalc-api.json b/precalc-api.json
index 1a1a724..c3f1ba6 100644
--- a/precalc-api.json
+++ b/precalc-api.json
@@ -216,7 +216,9 @@
         "required": [
           "fromCurrency",
           "merchantId",
-          "toCurrency"
+          "toCurrency",
+          "fromCountry",
+          "toCountry"
         ],
         "type": "object",
         "properties": {