diff --git a/ayanova/devdocs/todo.txt b/ayanova/devdocs/todo.txt
index 6967ab05..b9e31573 100644
--- a/ayanova/devdocs/todo.txt
+++ b/ayanova/devdocs/todo.txt
@@ -342,6 +342,18 @@ todo: DataList view and filter are combined and this is wrong
 todo: DataList - there are a bunch of props being set that don't exist, for example currentListViewId, dataListFilter, dataListSort
 	remove them with impunity
 
+
+
+** IMPORTANT todo: double check concurrency code with Customer or Project just to be sure, it has been changed but not sure if it was ever properly tested.
+	This bit is concerning in controller:
+	 if (biz.Errors.Exists(z => z.Code == ApiErrorCode.CONCURRENCY_CONFLICT))
+                    return StatusCode(409, new ApiErrorResponse(biz.Errors));
+                else
+                    return BadRequest(new ApiErrorResponse(biz.Errors));
+	And the new  ct.Replace(dbObject, putObject); being used in put*biz is also concerning
+	in the old code it would specifically have to set the concurrency value
+	Need to thoroughly check it's working as it should
+
 todo: userbiz validate can delete has funky error 
 todo: bugbug filter on a phone number field results in error at server as unsupported type
 	make sure all types are supported
@@ -429,6 +441,8 @@ todo: 2fa is going to be an absolute must have pretty soon, look into what's inv
 todo: if a menu item has no icon, can it be shown to the left and exclude the space taken up by the icon?
 	see CSR form for example
 
+
+
 todo: test errors on widget form for all controls
 	Have a way of telling the server on an update to return all the errors for all the fields possible as well as server generalerror
 	this way can see at a glance that all the controls are properly displaying their errrors