[ADD] accounting_update: allow zero quantity on invoice lines for tax reporting

accounting_update/__init__.py

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+from . import models

accounting_update/__manifest__.py

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+{
+    "name": "Account Update",
+    "author": "Shrey Patel",
+    "depends": ["l10n_in_edi"],
+    "license": "LGPL-3",
+    "data": [
+        "views/accounting_move_views.xml",
+    ],
+}

accounting_update/models/__init__.py

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+from . import account_move
+from . import account_move_line

accounting_update/models/account_move.py

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+from odoo import models
+
+
+class AccountMove(models.Model):
+    _inherit = "account.move"
+
+    def _get_l10n_in_edi_line_details(self, index, line, line_tax_details):
+        line_details = super()._get_l10n_in_edi_line_details(
+            index, line, line_tax_details
+        )
+        if line.is_zero_qty:
+            line_details["Qty"] = 0.0
+        return line_details

accounting_update/models/account_move_line.py

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+from odoo import models, fields
+
+
+class AccountMoveLine(models.Model):
+    _inherit = "account.move.line"
+
+    is_zero_qty = fields.Boolean()

accounting_update/views/accounting_move_views.xml

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+<odoo>
+    <record id="view_move_form" model="ir.ui.view">
+        <field name="name">account.move.form.inherit.accounting_update</field>
+        <field name="model">account.move</field>
+        <field name="inherit_id" ref="account.view_move_form"/>
+        <field name="arch" type="xml">
+          <xpath expr="//list[@name='journal_items']/field[@name='tax_ids']" position="after">
+                <field name="is_zero_qty" optional="show" column_invisible="parent.move_type not in ('out_invoice', 'out_refund')"/>
+          </xpath>
+          <xpath expr="//field[@name='invoice_line_ids']/form//field[@name='tax_ids']" position="after">
+               <field name="is_zero_qty" optional="show" column_invisible="parent.move_type not in ('out_invoice', 'out_refund')"/>
+          </xpath>
+        </field>
+    </record>
+</odoo>