Goal: Selection  field (Business Unit Reference) in Purchase Orders should be displayed/mirrored in the Vendor bill for accounting purposes, once the Bill is created through the corresponding confirmed PO.

How to configure related fields in Odoo 18 Online Enterprise?

Field properties in Purchase app

Field Label: Business Unit Reference

Technical name: x_studio_business_unit_ref_2

Field type: Selection

Model: Purchase Order

Stored: True

Indexed: True

Copied: True

Field Properties in Accounting app

Field Label: Business Unit Reference

Technical name: x_studio_business_unit_reference

Field type: Related field (Selection)

Model: Journal Entry

Stored: True

Indexed: True

Related Field Definition: purchase_id.x_studio_business_unit_ref_2