Hi,
If you have a module developed in version 15 and working fine in 15, first step to do is

* Try installing the module in the 16.0
* see if you have errors on installation
* if not, try printing the report and see if everything okay
* in case of getting traceback at any stage, just fix one by one and go ahead.

See:  How To Migrate Odoo Modules To Another Version

Technical changes in 16:  https://github.com/OCA/maintainer-tools/wiki/Migration-to-version-16.0

Thanks

Hi Holthausen,

If you're looking to generate a new report in Odoo V16 based on an existing report from V15, you can follow the steps outlined in  "How to Create a Custom PDF Report in Odoo 16".

The blog post provides a detailed guide on how to create a custom PDF report in Odoo 16. While the guide is specifically written for Odoo 16, you can use it as a reference to create a similar report in Odoo 16 based on your existing report from V15.

Here's a summary of the steps you can follow:

1. Understand Report Structure: Review the structure and layout of the existing report from V15 that you want to replicate in Odoo 16.
2. Create a New Report Template: Use Odoo's reporting framework to create a new report template in Odoo 16. You can use the existing report as a reference for the layout and structure.
3. Define Data Source: Define the data source for your new report. This could involve querying the necessary data from Odoo models or other data sources.
4. Customize Report Layout: Customize the layout of your new report template to match the design of the existing report from V15. You can use HTML/CSS and Odoo's QWeb templating language for this purpose.

By following the steps outlined in the blog post and using your existing report from V15 as a reference, you should be able to create a custom PDF report in Odoo 16 that meets your requirements.

Hope it helps!