1 files changed, 13 insertions, 0 deletions

diff --git a/src/api/burn/WixToolset.BootstrapperCore.Native/inc/BootstrapperApplication.h b/src/api/burn/WixToolset.BootstrapperCore.Native/inc/BootstrapperApplication.h
index b507b167..0b81b35a 100644
--- a/src/api/burn/WixToolset.BootstrapperCore.Native/inc/BootstrapperApplication.h
+++ b/src/api/burn/WixToolset.BootstrapperCore.Native/inc/BootstrapperApplication.h
@@ -223,6 +223,7 @@ enum BOOTSTRAPPER_APPLICATION_MESSAGE
     BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANNEDCOMPATIBLEPACKAGE,
     BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANRESTORERELATEDBUNDLE,
     BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANRELATEDBUNDLETYPE,
+    BOOTSTRAPPER_APPLICATION_MESSAGE_ONAPPLYDOWNGRADE,
 };
 
 enum BOOTSTRAPPER_APPLYCOMPLETE_ACTION
@@ -354,6 +355,18 @@ struct BA_ONAPPLYCOMPLETE_RESULTS
     BOOTSTRAPPER_APPLYCOMPLETE_ACTION action;
 };
 
+struct BA_ONAPPLYDOWNGRADE_ARGS
+{
+    DWORD cbSize;
+    HRESULT hrRecommended;
+};
+
+struct BA_ONAPPLYDOWNGRADE_RESULTS
+{
+    DWORD cbSize;
+    HRESULT hrStatus;
+};
+
 struct BA_ONBEGINMSITRANSACTIONBEGIN_ARGS
 {
     DWORD cbSize;