You hardy can have missed the announcements from Microsoft how they will continue delivering updates for Microsoft Dynamics 365 for Finance and Operations. In fact the full Dynamics 365 product range will be on the same update cadence. Depending if you are already running Microsoft Dynamics 365 or not there are changes which you also need to prepare for yourself.
Last week, I was upgrading AX 2012 R2 CU7 to CU8 and ran into a model store error. The error was similar to http://blogs.msdn.com/b/axsupport/archive/2014/01/08/violation-of-primary-key-constraint-pk-modelelementdata-elementhandle-error-installing-some-hotfixes-on-microsoft-dynamics-ax-2012-r2.aspx
It scared the hell out of me! First thing that came to mind was: is my model store corrupt in production?
But the source of the problem was indeed different; found out that the issue was label files.
In the AX 2012 R2 CU7, the DMF labels were missing, so this was fixed by adding them manually (see picture below)
This means that my AX2012 R2CU7 model store was consistent.
Label files cannot be deleted directly from the AOT. In such cases, the following workaround is necessary:
- Create a new model
- Move the labels to this new model
- Finally, delete this model