1. Go to your odoo webiste , navigate to Settings

2. Click on General Settings

3. Scroll down to the bottom of the page until you reach "Developer Mode" section

4. Activate the developer mode

5. Then you will notice new items in navigation bar , click on Technical and scroll until IAP Accounts , Click on it

6. Copy the "sms" Account Token feild and paste it in the Odoo Token field

If you don't have your Taqnyat Access Token yet ? You can create one by following this link Then copy your token to Taqnyat Token feild

It's last step , Finally!

You need to replace Odoo Endpoint for Odoo SMS module , I will guide to do that !
First Go to Odoo addons folder , navigate to this file sms/models/sms_api.py open the file for editing ,
Then find this parameter DEFAULT_ENDPOINT change it from https://iap-sms.odoo.com to https://taqnyat-odoo.taqnyat.mylabs.me