1) Sales invoice no item codes / Item group with GL code posted to non sales , eg Transport account etc
2) Customer and Supplier CN / DN
3) Stock Valuation / Calc error with –ve qty in Stk card calc
4) DO –> Inv , GRN –> PI not in the same mth
5) Use of Stock issue / receive documents that with NO GL posting
6) Landing cost module affect the stock valuation