Few Finished goods inventory have negative, zero and high value

Dear All,

We have implemented AX 2009.

Sep was 1st month and we closed the production and run the closing and adjustment in Dummy company.

What i have notice that in Finished group inventory i have in few items

1 ) huge negative and postive value,

  1. Value but quantity is zero.

In the problemtic item, i have notice issue cost per unit to COS is very odd amount.

Please if some one know the solution kindly reply asap . In live company still i have not yet close the production or run month end.