Good Morning

Warning: adding or deleting attributes will delete and recreate existing variants and lead to the loss of their possible customizations.

Can someone please assist as i am totally lost. Added new attributes and i have this message pop up

Check xpath location, if you want  field after another field change  into position="after"

Sample xpath to override product_template_only_form_view core module

<record id="product_template_only_form_view" model="ir.ui.view">
    <field name="name">product.template.product.form</field>
    <field name="model">product.template</field>
    <field name="mode">primary</field>
    <field name="priority" eval="8" />
    <field name="inherit_id" ref="product.product_template_form_view"/>
    <field name="arch" type="xml">
        <xpath expr="//form" position="attributes">
            <attribute name="name">Product Template</attribute>
        </xpath>
        <field name="categ_id" position="after">
            <field name="default_code" attrs="{'invisible': [('product_variant_count', '>', 1)]}"/>
            <field name="barcode" attrs="{'invisible': [('product_variant_count', '>', 1)]}"/>
        </field>

        <div name="button_box" position="inside">
            <button name="%(product.product_variant_action)d" type="action"
                icon="fa-sitemap" class="oe_stat_button"
                attrs="{'invisible': [('product_variant_count', '&lt;=', 1)]}"
                groups="product.group_product_variant">
                <field string="Variants" name="product_variant_count" widget="statinfo" />
            </button>
        </div>

        <xpath expr="//page[@name='general_information']" position="after">
            <page name="variants" string="Variants" groups="product.group_product_variant">
                <field name="attribute_line_ids" widget="one2many" context="{'show_attribute': False}">
                    <tree string="Variants" editable="bottom">
                        <field name="attribute_id" attrs="{'readonly': [('id', '!=', False)]}"/>
                        <field name="value_ids" widget="many2many_tags" options="{'no_create_edit': True}" context="{'default_attribute_id': attribute_id, 'show_attribute': False}"/>
                    </tree>
                </field>
                    <p class="oe_grey oe_edit_only">
                    <strong>Warning</strong>: adding or deleting attributes
                    will delete and recreate existing variants and lead
                    to the loss of their possible customizations.
                </p>
            </page>
        </xpath>
    </field>
</record>