diff --git a/manager/config-validator.hpp b/manager/config-validator.hpp
new file mode 100644
index 0000000..5d9ff5f
--- /dev/null
+++ b/manager/config-validator.hpp
@@ -0,0 +1,68 @@
+#include "grouplayout.hpp"
+#include "ledlayout.hpp"
+
+#include <phosphor-logging/lg2.hpp>
+#include <sdbusplus/bus.hpp>
+
+namespace phosphor
+{
+namespace led
+{
+namespace error
+{
+enum ConfigValidationError
+{
+    // An LED has different priorities assigned to it in different groups
+    LedPriorityMismatch,
+
+    // LED priority was needed but not assigned
+    MissingLedPriority,
+
+    // Mixup of the 2 configuration options
+    MixedLedAndGroupPriority,
+
+    // An invalid group priority was assigned
+    InvalidGroupPriority,
+
+    // Group priorities were not unique
+    DuplicateGroupPriority,
+};
+}
+
+class ConfigValidationException : std::runtime_error
+{
+  public:
+    error::ConfigValidationError reason;
+
+    ConfigValidationException(const error::ConfigValidationError& err,
+                              const std::string& msg) :
+        std::runtime_error(msg), reason(err)
+    {
+        lg2::error(msg.c_str());
+    }
+
+    ConfigValidationException(const error::ConfigValidationError& err,
+                              const std::string& groupName,
+                              const std::string& msg) :
+        std::runtime_error(msg), reason(err)
+    {
+        lg2::error("Configuration Validation Error in Group {GROUP}: {MSG}",
+                   "GROUP", groupName, "MSG", msg.c_str());
+    }
+
+    ConfigValidationException(const error::ConfigValidationError& err,
+                              const std::string& groupName,
+                              const std::string& ledName,
+                              const std::string& msg) :
+        std::runtime_error(msg), reason(err)
+    {
+        lg2::error(
+            "Configuration Validation Error in Group {GROUP}, Led {LED}: {MSG}",
+            "GROUP", groupName, "LED", ledName, "MSG", msg.c_str());
+    }
+};
+
+void validateConfigV1(const phosphor::led::GroupMap& ledMap);
+
+} // namespace led
+} // namespace phosphor