Custom app calling doctypes from different modules

Frappe Framework App Development
2

What exactly are you trying to do with this?

If you want to pull in a document, just use frappe.get_doc, or frappe.get_value for single values.

If you want a whole set of data, using frappe.db.sql queries can be quicker / easier.

Beginner level question - data accessibility issue after creating custom app
Data seen in mariaDB but can not access in endPoint API