At times when complete sales order shall not be invoiced as a part of business or customer request, you can allow order-line level invoicing this will enhance invoicing feature to help line level invoicing.
To perform this please log in to Odoo Sales>> Configuration>> Settings – Default invoicing based on ordered quantity.
Apply this to odoo by referring below screen-grab.
Please Contact us if you have any Odoo Implementation requirements to Hire dedicated Odoo developers or Odoo Development services from KTree. KTree is Best offshore Odoo development company with extensive experience in building Odoo ERP Modules & Integration.Request For Quote