diff --git a/docs/schema/yaml/1.0.0.yaml b/docs/schema/yaml/1.0.0.yaml
index b78e7de8..a7dc2371 100644
--- a/docs/schema/yaml/1.0.0.yaml
+++ b/docs/schema/yaml/1.0.0.yaml
@@ -777,4 +777,4 @@ services:
             # @param services.dev.agentSession.skills.branch (required)
             branch: ''
             # @param services.dev.agentSession.skills.path (required)
-            path: ''
\ No newline at end of file
+            path: ''
diff --git a/src/server/lib/jsonschema/schemas/1.0.0.json b/src/server/lib/jsonschema/schemas/1.0.0.json
index 1e851ed4..77aa2e73 100644
--- a/src/server/lib/jsonschema/schemas/1.0.0.json
+++ b/src/server/lib/jsonschema/schemas/1.0.0.json
@@ -251,7 +251,7 @@
       "minItems": 1,
       "items": {
         "type": "object",
-        "additionalProperties": true,
+        "additionalProperties": false,
         "properties": {
           "name": {
             "type": "string"
@@ -1515,4 +1515,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/src/server/lib/yamlSchemas/schema_1_0_0/schema_1_0_0.ts b/src/server/lib/yamlSchemas/schema_1_0_0/schema_1_0_0.ts
index 354776dc..93aee5df 100644
--- a/src/server/lib/yamlSchemas/schema_1_0_0/schema_1_0_0.ts
+++ b/src/server/lib/yamlSchemas/schema_1_0_0/schema_1_0_0.ts
@@ -133,8 +133,7 @@ const schema_1_0_0 = {
       minItems: 1,
       items: {
         type: 'object',
-        // Backward compatibility: ignore deprecated or repo-specific service keys at validation time.
-        additionalProperties: true,
+        additionalProperties: false,
         properties: {
           name: { type: 'string' },
           appShort: { type: 'string' },
diff --git a/src/server/models/config/index.test.ts b/src/server/models/config/index.test.ts
index 1647f733..54922372 100644
--- a/src/server/models/config/index.test.ts
+++ b/src/server/models/config/index.test.ts
@@ -453,36 +453,4 @@ describe('Yaml Service', () => {
       expect(YamlService.getDetatchAfterBuildPipeline(service)).toEqual(false);
     });
   });
-
-  describe('schema compatibility', () => {
-    test('accepts deprecated kedaScaleToZero config as a no-op', () => {
-      const deprecatedKedaConfig = `---
-      version: '1.0.0'
-
-      services:
-        - name: 'legacy-service'
-          kedaScaleToZero:
-            enabled: true
-            minReplicaCount: 0
-            maxReplicaCount: 5
-            cooldownPeriod: 300
-            pollingInterval: 30
-          helm:
-            repository: 'example/legacy-service'
-            branchName: 'main'
-            deploymentMethod: 'native'
-            chart:
-              name: 'example-chart'
-            docker:
-              defaultTag: 'main'
-              app:
-                dockerfilePath: 'Dockerfile'
-      `;
-
-      const parser = new YamlConfigParser();
-      const config = parser.parseYamlConfigFromString(deprecatedKedaConfig);
-
-      expect(() => new YamlConfigValidator().validate_1_0_0(config)).not.toThrow();
-    });
-  });
 });