diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index 4cfd9b3..75d7131 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -19,5 +19,7 @@ jobs:
       with:
         name: Event File
         path: ${{ github.event_path }}
+  schema-check:
+    uses: ./.github/workflows/lava-sanity.yml
   nightly:
     uses: ./.github/workflows/build.yml
diff --git a/lava/rb3g2/invalid.yaml b/lava/rb3g2/invalid.yaml
new file mode 100644
index 0000000..7303153
--- /dev/null
+++ b/lava/rb3g2/invalid.yaml
@@ -0,0 +1,66 @@
+actions:
+- deploy:
+    images:
+      image:
+        headers:
+          Authentication: Q_GITHUB_TOKEN
+        url: "https://quic-yocto-fileserver-1029608027416.us-central1.run.app/12591501185/qcs6490-rb3gen2-core-kit/core-image-base-qcs6490-rb3gen2-core-kit.rootfs.qcomflash.tar.gz"
+    postprocess:
+      docker:
+        image: ghcr.io/foundriesio/lava-lmp-sign:main
+        steps:
+        - export IMAGE_PATH=$PWD
+        - cp overlay*.tar.gz overlay.tar.gz
+        - echo "OVERLAY=overlay.tar.gz" >> $IMAGE_PATH/flash.settings
+        - echo "OVERLAY_PATH=/home/" >> $IMAGE_PATH/flash.settings
+        - echo "DEVICE_TYPE=qcs6490-rb3gen2" >> $IMAGE_PATH/flash.settings
+        - cat $IMAGE_PATH/flash.settings
+    timeout:
+      minutes: 5
+    to: downloads
+- deploy:
+    images:
+      image:
+        url: downloads://core-image-base-qcs6490-rb3gen2-core-kit.rootfs.qcomflash.tar.gz
+      settings:
+        url: downloads://flash.settings
+      overlay:
+        url: downloads://overlay.tar.gz
+    timeout:
+      minutes: 5
+    to: flasher
+- boot:
+    auto_login:
+      login_prompt: 'login:'
+      username: root
+    method: minimal
+    prompts:
+    - root@qcs6490-rb3gen2-core-kit
+    timeout:
+      minutes: 3
+- command:
+    name: network_turn_on
+- test:
+    definitionssss:
+    - from: git
+      name: "{{ MACHINE }}-smoke-test"
+      path: automated/linux/smoke/smoke.yaml
+      repository: https://github.com/linaro/test-definitions.git
+      parameters:
+        SKIP_INSTALL: "True"
+        TESTS: "pwd, uname -a, ip a"
+context:
+  lava_test_results_dir: /home/lava-%s
+  test_character_delay: 10
+device_type: qcs6490-rb3gen2-core-kit
+job_name: boot test {{ ABC }} (qcs6490-rb3gen2-core-kit) 12591501185
+metadata:
+  downloads-url: "{{ DOWNLOADS_URL }}"
+priority: 50
+tags:
+- cambridge-lab
+timeouts:
+  job:
+    minutes: 15
+visibility: public
+
diff --git a/schemacheck.py b/schemacheck.py
index b8e5944..925c7d2 100644
--- a/schemacheck.py
+++ b/schemacheck.py
@@ -1,6 +1,7 @@
 import os
 import sys
 import yaml
+import voluptuous
 from lava_common.schemas import validate
 
 exitcode = 0
@@ -15,8 +16,15 @@
                 y = yaml.safe_load(f)
                 f.close()
                 validate(y)
-            except:
+            except voluptuous.Invalid as e1:
                 print(f"{filename} is invalid")
+                print(e1.msg)
+                print(e1.path)
+                exitcode += 1
+            except yaml.parser.ParserError as e2:
+                print(f"{filename} is invalid")
+                print(e2.problem)
+                print(e2.problem_mark)
                 exitcode += 1
             print(f"{filename} is valid")
 sys.exit(exitcode)