Hello,

I'm on Odoo v9 and I'm trying to optimize my hr_expense module, and adding new custom fields.

But to run it well I need to delete the "required=true" of some base fields of the module.

I tried via the graphic interface, and this error displayed :

Properties of base fields cannot be altered in this manner! Please modify them through Python code, preferably through a custom addon!

So I modified the Python code of the model hr_expense.py, deleting the "required=true" I didn't need. I restarted Odoo, but nothing happened.

I'm not an expert with Odoo so can anybody explain me why it doesn't work and how should I proceed ?

Thanks a lot !

Regards