Error "1:N Fetch Mode is not allowed on Datasource having join condition with node other than its immediate parent" in Ax 2012
 Error:  If you are facing following error on reservation of item in Sales Line in Sales order or any other order.   "1:N Fetch Mode is not allowed on Datasource having join condition with node other than its immediate parent."   "Field 'Dimension No.' must be filled in."   Then you can try following solution:   Solution:   You can install  this hot fix: KB Article Number(s): 2922779. For Axapta 2012  R2 CU 7    You can download hotfix from Microsoft partner source site.