If you need to create duplicate invoices (i.e. monthly contracts) on a regular basis (e.g. weekly, fortnightly, monthly, etc.), then Repeat Invoicing could save you time and eliminate typing mistakes.
Create your invoice as a ‘document’ within SOP, when on the header page you will be asked to specify the frequency of repetition “Repeat” and then specify the duration (start to finish dates).
Producing the invoices is done through the ‘Repeat’ option in SOP, after specifying the criteria the system will prompt you with a list of documents awaiting invoicing up to the criteria specified.