3426144 - How To Set Access Restriction Rights for User on Org Unit level?

How to set the access restriction rights of an employee for the document on Org Unit level?

SAP Business ByDesign 

Currently, restrictions can be set only at the company level for the business users.

This is a standard system behavior.

It can be taken as a new requirement hence post the idea in influence forum - https://influence.sap.com/sap/ino/#/campaign/886 

This is the official channel to address all new requirements.

Access rights; Purchase order access rights; access rights at unit level; org unit level; employee, access restrictions, employee rights, set, company level, , KBA , SRD-SRM-PRO , Purchase Requests and Orders , Product Enhancement