Purchase Order Approval Workflow Guide
This guide outlines the standardized approval workflow for all Purchase Orders (POs) issued across Aevum Zenth subsidiaries. Compliance with this workflow is mandatory to ensure proper budget allocation, audit trail integrity, and SOX compliance.
ⓘ Scope
Applies to all departments, subsidiaries, and project codes within the Aevum Zenth Conglomerate. Capital expenditures (CapEx) and operational expenditures (OpEx) follow this same routing logic.
Standard Approval Workflow
PO Request Submission
The requestor creates a new PO in ZenthERP, attaches vendor quotes (minimum 3 for amounts >$10k), selects the correct cost center, and specifies delivery terms.
/po/createAutomated Budget & Policy Check
The system validates available budget in the selected cost center, checks for duplicate POs, and verifies vendor master data compliance. Requests failing validation are returned for correction.
PO-VAL-001 to PO-VAL-004Department Head Review
Direct manager reviews business justification, timeline urgency, and resource allocation. Must approve or request changes before routing to Finance.
APPR-DEPT | SLA: 48 business hoursFinance & Compliance Routing
Based on the approval matrix, the PO routes to the appropriate Finance Director, VP, or Executive Sponsor. Contractual terms and tax codes are verified at this stage.
Final Authorization & Issuance
Upon final approval, the PO is digitally signed, locked, and transmitted to the vendor via the ZenthProcure portal. Requestor receives confirmation with tracking ID.
ISSUED | Audit Log: ImmutableApproval Threshold Matrix
| PO Value (USD) | Dept. Head | Finance Director | VP / COO | CFO / CEO |
|---|---|---|---|---|
| $0 – $4,999 | ✅ Required | ⏭️ Auto-approve | — | — |
| $5,000 – $49,999 | ✅ Required | ✅ Required | — | — |
| $50,000 – $249,999 | ✅ Required | ✅ Required | ✅ Required | — |
| $250,000+ | ✅ Required | ✅ Required | ✅ Required | ✅ Required |
⚠️ Split PO Prohibition
Deliberately splitting a single procurement request into multiple POs to bypass approval thresholds is strictly prohibited and constitutes a policy violation. The audit system flags sequential POs to the same vendor within 30 days.
Exceptions & Escalation Path
If an approver does not act within the SLA window, the system will automatically escalate:
- 24h delay: Notification sent to approver's direct manager
- 48h delay: Routing reassigned to department backup approver
- 72h delay: Escalated to Regional Finance Controller with auto-flag for audit review
For emergency procurements (critical infrastructure failure, safety compliance, or force majeure), use the EMG-PO fast-track workflow. Post-issuance reconciliation documentation must be submitted within 72 hours.
Compliance & Audit Requirements
🔒 Audit Trail Standards
All PO actions are logged in the ZenthERP immutable ledger. Retention period: 7 years. Access logs, approval timestamps, and amendment reasons are fully traceable for internal and external auditors.
- Amendments exceeding 10% of original value require re-routing through the full approval matrix
- Cancellations must reference the original PO number and state business reason
- All supporting documentation (quotes, contracts, change orders) must be attached before final issuance
Support & Contact
For system issues, routing errors, or policy clarifications:
- Procurement Helpdesk:
helpdesk-procurement@aevumzenth.internal - ZenthERP Support:
it-support@aevumzenth.internal - Internal Audit Inquiries:
compliance-audit@aevumzenth.internal
Last reviewed: Q1 2026 | Next scheduled review: Q1 2027