SoD in SAP Business One
With the majority of business processes and tasks shifting to software, SoD in SAP Business One becomes a matter of rules and user authorization. For instance, the person responsible for creating the purchase order has a different user account and rules attached to his role. If they try to approve the PO by themselves in the next step, SAP Business One will prevent that from happening and enforce SoD.
What a user has the authority to do is covered in the SAP GRC access controls. It can track what your users are doing and can detect a potential fraud activity or violation of SoD and issue an alert.