Exception no read only change hash found

We are seeing the following error: I see that this was related to entity access involving Xpath constraints and was addressed in 7.1.x.   We are using 7.5.1 and this does involve Xpath constraint, so wondering if related? Any thoughts on whether this is an error in our model or a remaining Mendix issue? It may be that some of the associations involving the objects in question are not being set correctly (working with student team to review this) but would have thought that would result in incorrect data rather than an exception of this kind. Thanks for any suggestions on how to track this down and, if necessary, work around it. George Wyner p.s. just correct title (*hash* not *has*)
2 answers

Have a look at this post:



Hi George,

From what I found on the forum the problem still occurs after 7.1 as well. It's not clear from your question when you encounter the problem exactly, but here another topic about the problem in 7.3 where a reference over asociation was set automatically but there was no entity access to the association which led to the same error: