Adding an invoice
You can create an invoice for a contract. This is performed in  Contracts . However, the generated invoices are displayed in  Invoices .
Procedure
1. In the  Contracts  TSI, go to the Contracts selection level and select the contract for which you intend to add an invoice.
2. On the action panel, click Add invoice.
3. Select an Up to and incl. date to create an invoice.  Planon ProCenter  creates an invoice containing all the closed amounts that have not yet been invoiced with a payment date before the Up to and incl. date and a closure date after the Is invoiceable from  date.
4. Click OK.