Dear Georges Leduc,
The Inventory Costing Error Detection report and Whitepaper for NAV 2013 are in the pipeline to be released soon. When you need it urgently, please can you raise directly or engage with your partner to raise a support incident with MS Support. We can then liaise with you and share the latest draft version of the report.
The report from my prior experience will handle not all, but at least the majority of the data inconsistencies on Inventory Costing related to tables 32, 339 and 5802. It is for sure a very handy tool to evaluate the most known issues and options to rectify.
Best regards, Christiaan.