The procurement process with RBAC is not just about preventing unauthorized purchases. It is about defining every action, every permission, every step in the workflow with precision. In RBAC, roles represent the authority level of a user. Procurement stages—from requisition to purchase order to payment—are mapped to these roles. This ensures that no one outside the correct scope can approve or move a request forward.
To build a secure procurement process using RBAC, start by listing all possible actions in your system. Map each action to a set of roles. A role might be “Requester,” “Approver,” “Procurement Manager,” or “Finance.” Each role has permissions defined explicitly. For example, a Requester can submit a requisition but cannot approve it. An Approver can authorize requests but cannot modify payment terms.
The RBAC model must be implemented inside the procurement workflow engine. This is where rules are enforced at runtime. Every API call and UI interaction in the procurement app should check the user’s role before executing the action. If a role change is needed, it should go through a controlled process to prevent escalation abuse.