How to migrate a POS module from Odoo V12 to Odoo V16?
Here’s a general outline of the migration process

Odoo POS Module Migration

by Hafiz Junaid

Migrating a Point of Sale (POS) module from Odoo version 12 to version 16 involves several steps to ensure compatibility with the changes introduced in the newer version. Here's a general outline of the migration process:

Step 1: Backup your data

Before proceeding with any migration, it is crucial to create a backup of your Odoo 12 database and your custom POS module. This ensures that you have a safe copy of your data in case something goes wrong during the migration process.

Step 2: Update your custom module

Update your custom POS module's code to make it compatible with Odoo 16. Odoo versions introduce changes to the core system, and some APIs and methods may have been deprecated or replaced with newer ones. Review the Odoo 16 documentation and release notes to understand the changes and how they might impact your module.

Step 3: Update dependencies

Check if your custom POS module depends on any third-party modules or libraries. Ensure that these dependencies are compatible with Odoo 16. You may need to update or replace them if they are not compatible.

Step 4: Review model changes

Odoo might have made changes to the core models, including the 'pos.order' model used in the Point of Sale module. Review the changes and update your module's code accordingly. You may need to adjust the model's fields, methods, or constraints to match the new version's requirements.

Step 5: Update views

Check the XML views used in your POS module and ensure that they are compatible with the new view syntax and structure introduced in Odoo 16.

Step 6: Update security rules

Odoo's security rules may have changed, so review and update the security rules in your POS module accordingly to ensure proper access controls.

Step 7: Test thoroughly

After making the necessary changes, thoroughly test your custom POS module in Odoo 16. Ensure that all the functionalities are working as expected and that there are no critical issues or errors.

Step 8: Update the manifest file

Update the manifest file of your custom POS module to specify the supported Odoo versions. Make sure it includes "16.0" as a supported version. In Odoo 12 we added all JS-related files in XML view and then added these files in the manifest. But in Odoo 16 there is a slight change, we need to add all files related to js, scss, and xml in the manifest file under their own bundle.

Step 9: Deployment

Once you have successfully migrated and tested your POS module, you can deploy it to your production environment. However, it's essential to perform a thorough test again in the production environment before using it in a live environment.


Keep in mind that the migration process may vary depending on the complexity and size of your custom POS module. It's essential to carefully review the changes in Odoo 16 and adapt your code accordingly. Additionally, consider seeking assistance from Odoo developers or partners experienced in migration to ensure a smooth and successful migration process.

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