I got error "Reference to the member Average Cost of the variable could not be solved." during data upgrade 2009 to 2015.
I found out that there is function .. in codeunit "Upgrade Nav Old Version" which refer to a filed "Average Cost" of Table "Lifo Band" which is not actually present in the table . There is one similar field "year average cost". Should I change the code in upgrade codeunit.
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