diff --git a/app/src/main/res/raw/dks_1802_epd.json b/app/src/main/res/raw/dks_1802_epd.json
index e2a8f16..2b6ce8c 100644
--- a/app/src/main/res/raw/dks_1802_epd.json
+++ b/app/src/main/res/raw/dks_1802_epd.json
@@ -219,7 +219,7 @@
         {
           "hint": "2-Digit Area Code Ref Number",
           "size": 2,
-          "min": 1,
+          "min": 0,
           "max": 15
         },
         {
@@ -512,7 +512,7 @@
         {
           "hint": "Area Code",
           "size": 2,
-          "min": 1,
+          "min": 0,
           "max": 15
         },
         {
diff --git a/app/src/main/res/raw/dks_1819.json b/app/src/main/res/raw/dks_1819.json
index e02b96e..46893ae 100644
--- a/app/src/main/res/raw/dks_1819.json
+++ b/app/src/main/res/raw/dks_1819.json
@@ -37,7 +37,7 @@
         {
           "hint": "Area Code Ref Number",
           "size": 2,
-          "min": 1,
+          "min": 0,
           "max": 15
         },
         {
@@ -54,7 +54,7 @@
         {
           "hint": "Area Code",
           "size": 2,
-          "min": 1,
+          "min": 0,
           "max": 15
         },
         {