It is possible to specify the default invoice due date that gets sent to Xero by adding the "Xero API Invoice Due Date" setting to your ValuePRO Instance.
Note: A Master User of your ValuePRO Instance will need to complete the following.
1. Open Settings in ValuePRO Standard Edition.
2. Scroll to the bottom of the Settings page to add a new setting. Enter the name of the setting, and the amount of days you would like specified on your due date. Then click Save Changes
3. Your ValuePRO - Xero Integration will now sync invoices with the days specified in the setting added.