We've been using Odoo 11 for some time now but cannot install the Purchase Management module. We are using Sales, CRM, Project, Sales Management and Invoicing modules with no issues. We have not done any customization to date aside from minor field display changes in CRM Pipeline Kanban view and have very limited users but a lot of sales and invoicing data.
Whenever we try to install the Purchase Management module, it fails with the following errors
ValueError: Element '<group name="invoicing">' cannot be located in parent view
Error context:
View `product.template.invoice.policy`
[view_id: 661, xml_id: sale.product_template_form_view_invoice_policy, model: product.template, parent_id: 411]
'Error while validating constraint\n\nElement \'<group name="invoicing">\' cannot be located in parent view\n\nError context:\nView `product.template.invoice.policy`\n[view_id: 661, xml_id: sale.product_template_form_view_invoice_policy, model: product.template, parent_id: 411]', None)
odoo.tools.convert.ParseError: "Error while validating constraint
Element '<group name="invoicing">' cannot be located in parent view
We are stuck and don't know what to do to enable this functionality! We did perform a fresh install again and were able to import to the Purchase Management module but then when we imported our database, it disappeared and we ran into the same error on installation as above.
Please help!!!