You can explicitly select the services or courses you want to invoice. Only registrations withe status "invoiceable" for the selected services will then be invoiced.

During the invoicing run, the system creates the invoice items with all information necessary for an accounting system to create postings or invoice items.

	Important
	If you do not define any account credit, cost center or cost carrier in an individual course or service, the system will derive the values from the corresponding service category during the invoicing run.

Depending on the amount of invoice items to create, the invoice run can last some seconds. The process runs in the background and you can see the current status in the list of the invoicing runs. If you refresh the list after some time you can check if the invoicing runs has finished already.

You can now send an predefined email to all the debtors of the invoice items, where they get a list of all invoice items and the total sum.

	Tip
	This way you can inform the debtors upfront about the invoice they will receive and give them some time to contact you to discuss any issues before you really export the invoice items to your accounting system. That avoids the more time consuming corrections in the accounting system.

If an invoicing run is deleted, the invoiced service registrations will be reset again to the state "invoiceable"

Once an invoicing run has finished, you can edit the invoice items manually in order to change, delete or create new invoice items.

	Tip
	If you need to create any manual invoice items, then you should do that in a finished invoice run before you export it.

Now you can edit all details of the selected invoice item:

Within the invoicing run you can export the list of the invoice items by clicking on the button for "CSV export".

After the export, the status of the invoicing run will switch to exported.

This has no functional impact, but gives you the information that you already exported the invoicing run.