| Transaction Type | Movement | Stock Level |
| Starting Stock Level | 0 | 0 |
| Sale | -8 | -8 |
| Goods In | 4 | -4 |
If you have goods stock in at the wrong value (And you remain in negative stock), you are not able to Goods out the parts as you do not have any stock to goods out.
To correct this get the accountant to post the invoice as normal and the system will write off the difference to 1.10.40.7