Go to Accounts receivable/Sales/Sales order
Add an order with F2 or click Add in the ribbon.
Select account and debtor information is retrieved and can now be changed as needed.
Click Save & go to lines to enter the items you want to sell. 
On the order lines, you must match the item with one of the batch/serial numbers that are in stock. If you don't, you will get the following error.
Click Batch/serial numbers in the ribbon.
Select the item in the Unlinked window that you want in a sale. Click on Linking.
Click Save and close the tab.
When invoicing a sales invoice, you can see that the serial number is printed.
Go to Lager/Items and select the item sold
Click Batch/serial numbers in the ribbon.
The sale is now registered on the lines with the remaining quantity.
Clicking Open displays the batch/serial numbers that are open, i.e. both stock items and empty batch/serial numbers.
Clicking All will display all the batch/serial numbers created in the list.
Click on Postings to see an overview of the postings that have been made on the selected batch number
On the order lines, you must match the item with one of the batch/serial numbers that are in stock. If you don't, you will get the following error.
Click Batch/serial numbers in the ribbon.
Select the item in the Unlinked window that you want in a sale. Click on Linking.
Click Save and close the tab.
When invoicing a sales invoice, you can see that the serial number is printed.
Go to Lager/Items and select the item sold
Click Batch/serial numbers in the ribbon.
The sale is now registered on the lines with the remaining quantity.
Clicking Open displays the batch/serial numbers that are open, i.e. both stock items and empty batch/serial numbers.
Clicking All will display all the batch/serial numbers created in the list.
Click on Postings to see an overview of the postings that have been made on the selected batch number