How to configure invoice number? – Woo Invoice

    Configuring “Invoice Number” is one of the premium features of Woo Invoice. In order to configure Invoice Number follow the steps below:

    1. Go to the Settings of your Woo Invoice from your WordPress Dashboard.
    2. Click on the Invoice tab.
    3. Go to the Invoice Number section. There are 3 options in the Numbering Type drop-down. You can either choose a static number as 
      1. Prefix + Custom Sequence + Suffix
      2. Prefix + Order Number + Suffix  
      3. Order Number.
    4. For Prefix and Suffix field you can add either static text or date macros. Available date macros are {{day}}, {{month}}, {{year}}
    5. You can set the Next Invoice No. to start your invoice numbering from a custom sequence like 1212 or 10000 or 1 etc.