Can't update invoice about xeroizer

[waynerobinson]

How are you generating this message?

The TaxType seems to be set to OUTPUT which means there should be a value for TotalTax.

[bpinto]

This message is from the exception that xeroizer is raising.

I don't specify any tax value, this is how I'm specifying each item:

    xero_invoice.add_line_item(
      account_code: item.source_item.xero_account_code || xero_account_code,
      description: item.name,
      item_code: item.item_code,
      quantity: item.quantity,
      unit_amount: item.net_price,
      tax_type: item.tax ? nil : 'NONE'
    )

The item is tax inclusive, so I assume it generates the tax amount automatically.

[bpinto]

From xero documentation(http://developer.xero.com/documentation/api/invoices/):

<TaxAmount> Used as an override if the calculated <TaxAmount> is not correct

This is why I'm not specifying the tax amount.

[afoster]

I found I had to manually re-calculate and set the invoice.sub_total, invoice.total_tax and invoice.total when modifying the amounts of any invoice.line_items.