In Odoo Community Edition, required fields are automatically marked with a red asterisk (*) in the form view when the field is set as required in the model or view. Here’s how you can ensure this works correctly:

✅ 1. Use the required=True Attribute in the Model

When you define a field with required=True in your model, Odoo automatically adds a red * in the form view.

📌 Example:

python
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from odoo import models, fields

class MyModel(models.Model):
    _name = 'my.model'

    name = fields.Char(string="Name", required=True)  # Adds a red *

✅ 2. Set required="1" in the Form View (XML)

You can also specify the required attribute directly in the form view XML.

📌 Example:

xml
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<field name="name" required="1"/>

Odoo will automatically display a red * next to the field label.

✅ 3. Fix Missing Red Asterisk with CSS (If Not Displayed)

In some custom themes, the red * might not appear. You can add custom CSS to enforce it:

📌 Example (SCSS in a custom module):

scss
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.o_required_modifier label:after {
    content: " *";
    color: red;
    font-weight: bold;
}

<field name="zip" placeholder="ZIP" required="1"/>

Make required="1" in your XML view