this should work

mission/acs/defs.h

@@ -53,6 +53,13 @@ enum GpsSource : uint8_t {
   SPG4,
 };
 
+enum RotRateSource : uint8_t {
+  ALL_INVALID,
+  SUSMGM,
+  QUEST,
+  STR,
+};
+
 static const uint8_t SUBSYSTEM_ID = SUBSYSTEM_ID::ACS_SUBSYSTEM;
 //! [EXPORT] : [COMMENT] The limits for the rotation in safe mode were violated.
 static constexpr Event SAFE_RATE_VIOLATION = MAKE_EVENT(0, severity::MEDIUM);