diff --git a/LocationAPI.json b/LocationAPI.json
index 19ee416a8751859ace39ae3fe3cd89eb3ccd3ad0..1e4c8323240cf0a81c71b5b383d7b4ee35970fd4 100644
--- a/LocationAPI.json
+++ b/LocationAPI.json
@@ -1230,6 +1230,11 @@
     "OperationStatus": {
       "description": "The operation status of the access point",
       "type": "string",
+      "enum": [
+        "Serviceable",
+        "Unserviceable",
+        "Unknown"
+      ],
       "example": "Serviceable"
     },
     "PreviousAccessPointId": {
diff --git a/LocationAPI.yaml b/LocationAPI.yaml
index 3fff9a0291ee13f80b610eabf7de06f5cb07f069..df8d942ac55e3c61ac31d23b8accd2ad6544e3de 100644
--- a/LocationAPI.yaml
+++ b/LocationAPI.yaml
@@ -817,6 +817,10 @@ definitions:
   OperationStatus:
     description: The operation status of the access point
     type: string
+    enum:
+      - Serviceable
+      - Unserviceable
+      - Unknown
     example: Serviceable
   PreviousAccessPointId:
     description: Zone ID
diff --git a/definitions/OperationStatus.yaml b/definitions/OperationStatus.yaml
index 8ad47b5876fbc3b7c9540b23f1740de9439e106f..53f2ec7cfd1ee591b1f0db1b85e4a4df1b39addd 100644
--- a/definitions/OperationStatus.yaml
+++ b/definitions/OperationStatus.yaml
@@ -1,3 +1,7 @@
 description: The operation status of the access point
 type: string
+enum:
+  - Serviceable
+  - Unserviceable
+  - Unknown
 example: "Serviceable"
\ No newline at end of file