InvoiceLine Item Category

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Hello,

 

I sent this question to the http://ubl.xml.org/forum/invoiceline-item-category
forum and was redirected here.

 

 I am researching
information on UBL to introduce it in my organisation.

 

 I noticed that the
InvoiceType can contain one-or-many InvoiceLine which are associated with an
Item.

 

 

In my organisation, invoices contain invoice lines too.
However, invoice lines are grouped by their item category. The category name is
a subheader before each invoice line group whose items are part of the same
category. Categories are like "Services", "Software
licences", "Subscriptions", "Network hardware",
"Server hardware", etc.

 

Example:

 

Invoice 1234

========================================================

 Subscriptions

-----------------------------------------------------------------------------------

* Invoice Line 1 - Item: yearly subscription ABC $100

* Invoice Line 2 - Item: yearly subscription XYZ $50

---> Subscriptions subtotal = $150 

 

Software licences

-----------------------------------------------------------------------------------

* Invoice Line 3 - Item: 50 seats licence for software A
$50

* Invoice Line 4 - Item: 4 CPU licence for software B $10

---> Software licences subtotal = $60

 

---> Payable amount =$210

=======================================================

 

 

How would you define these categories?

 

Would it be an InvoiceLine and each invoice line would be
in a SubInvoiceLine?

 

If so, the structure would be:

 

Invoice

|--------------> InvoiceLine (for the 1st category)

                     
|--------> Item (for the 1st category name)

                     
|--------> SubInvoiceLine (for the 1st real line)

                                     |--------> Item (for the 1st real
line item)

                     
|--------> SubInvoiceLine (for the 2nd real line)

                                    
|--------> Item (for the 2nd real line item)

etc.

 

What do you think?