How do I add custom fields to a report?

Add the Custom Fields app as a dependency to the app.json file of your own Business Central extension (e.g., a Per-Tenant Extension (PTE) containing customizations for your environment). After this, the fields can be accessed and added to your custom report object, or to an existing report using a reportextension object. Please see the "Report Extension Object" section of the Microsoft Dynamics 365 Business Central documentation for more information.

Alternatively, you can use the "Dataset Extensions" feature of our Document Creator app, which enables adding any field to your reports' datasets to use them in your Document Creator report layouts, without need for creating any additional Business Central extensions.