problem with sales order


I have created one item and when i try to post the sales order with negative inventory it is giving error as "

The transaction cannot be completed because it will casue inconsistencies in the G/L table.

Check wher and how the CONSISTENT function is used in the transaction to find the reason for the error.

Contact your system administrator.

Tables can be marked as inconsistent during comprehensive tasks,such as posting. This prevents data being updated incorrectly.

Thank u

Negative inventory meaning you are creating negative inventory? God I hate that.

Anyway search the forum, pretty sure I have read about this before. The advice will probably to download the fix from Partnersource, so look there as well.