Customizing Your Invoice Format Estimated Reading Time: < 1 Minute You can set up your invoice sequence format by selecting from a variety of options. The Invoice sequence section displays an example of what your configured invoice name will look like. Go to Settings > Configurations. In the Invoice settings section, click Manage. In the Invoice prefix field, set an alphanumeric identifier, with a maximum of 10 characters. Select one of the formats from the Variable selections field:Invoice NumberAccount number - Invoice numberDate [YYYYMMDD] – Invoice NumberAccount Number – Date [YYYYMMDD] – Invoice Number Click Save.