diff --git a/data/fields/destination.json b/data/fields/destination.json
index 1c6f850a..271afe08 100644
--- a/data/fields/destination.json
+++ b/data/fields/destination.json
@@ -2,6 +2,7 @@
     "key": "destination",
     "type": "semiCombo",
     "label": "Destinations",
+    "allowDuplicates": false,
     "snake_case": false,
     "caseSensitive": true
 }
diff --git a/data/fields/destination/ref.json b/data/fields/destination/ref.json
index 5abccf98..a23c564b 100644
--- a/data/fields/destination/ref.json
+++ b/data/fields/destination/ref.json
@@ -2,6 +2,7 @@
     "key": "destination:ref",
     "type": "semiCombo",
     "label": "Destination Road Numbers",
+    "allowDuplicates": true,
     "snake_case": false,
     "caseSensitive": true
 }
diff --git a/data/fields/destination/ref_oneway.json b/data/fields/destination/ref_oneway.json
index 31b1e9c5..9ca276b5 100644
--- a/data/fields/destination/ref_oneway.json
+++ b/data/fields/destination/ref_oneway.json
@@ -6,6 +6,7 @@
         "key": "oneway",
         "value": "yes"
     },
+    "allowDuplicates": true,
     "snake_case": false,
     "caseSensitive": true
 }
diff --git a/data/fields/destination/symbol.json b/data/fields/destination/symbol.json
index 407a1213..1ad4d301 100644
--- a/data/fields/destination/symbol.json
+++ b/data/fields/destination/symbol.json
@@ -1,5 +1,6 @@
 {
     "key": "destination:symbol",
     "type": "semiCombo",
-    "label": "Destination Symbols"
+    "label": "Destination Symbols",
+    "allowDuplicates": true
 }
diff --git a/data/fields/destination/symbol_oneway.json b/data/fields/destination/symbol_oneway.json
index 2c105642..faf3d330 100644
--- a/data/fields/destination/symbol_oneway.json
+++ b/data/fields/destination/symbol_oneway.json
@@ -2,6 +2,7 @@
     "key": "destination:symbol",
     "type": "semiCombo",
     "label": "{destination/symbol}",
+    "allowDuplicates": true,
     "prerequisiteTag": {
         "key": "oneway",
         "value": "yes"