Monthly Prepaid Traffic Reconciliation and Audit Playbook

Discrepancies between delivery logs and balance debits can erode margins on prepaid sub-accounts. Unchecked webhook delays often lead to unbilled traffic or unexpected ledger mismatches. Exporting monthly DLR records from IOSOR allows teams to audit billable events against real balance changes.

Establishing the Reconciliation Baseline

Monthly reconciliation ensures that every SMS event processed via your white-label infrastructure matches the ledger debits. Begin by exporting the DLR logs from the IOSOR platform for the full calendar month. Filter these records by sub-account ID to isolate traffic segments. Ensure that all E.164 formatted numbers are accounted for, excluding any failed attempts that did not trigger a billable event. Align these logs with the platform ledger exports to identify discrepancies in real-time.

Ledger Debit Verification

Cross-reference the DLR success count with the debit logs generated by the platform. Each successful delivery must correspond to a specific debit entry in the sub-account ledger. If you notice a variance, check the webhook response logs to confirm if the delivery status was updated correctly. Maintain a USD 20 prepaid floor for all sub-accounts to prevent service interruptions during high-volume periods. This buffer ensures that even if reconciliation reveals a minor lag, the account remains active.

Managing High-Volume Accounts

For sub-accounts exceeding USD 1,000/month in traffic, perform a soft review of their usage patterns. Analyze the ratio of OTP traffic to promotional SMS to ensure compliance with your platform policies. If a sub-account shows irregular spikes, verify the JIT provisioning logs to confirm that the numbers assigned were active during the period of high activity. This proactive audit prevents billing disputes before they escalate.

Handling Discrepancies and Adjustments

When a variance is detected, investigate the specific transaction IDs in the IOSOR console. Check if the discrepancy stems from a delayed DLR or a system-level ledger error. If a credit is required, process it through the manual adjustment tool, documenting the reason for the correction. Always ensure that the ledger balance reflects the adjusted amount immediately to maintain transparency with your sub-account holders.

Essential Operational Resources

To maintain a proven billing environment, integrate these operational workflows into your monthly routine. These resources provide the necessary context for managing sub-account finances and audit trails effectively:

• Two-wallet brand split: ops playbook without mixed From
• Prepaid top-up before holiday volume: ops checklist
• Audit log retention: what buyers can export and prove.

Start with IOSOR

Open the IOSOR console and navigate to the Ledger Audit section to export the full-month DLR records alongside sub-account debit logs. Filter by sub-account ID and cross-check transaction hash IDs against webhook status payloads to isolate any unaccounted delivery receipts. If an unverified ledger discrepancy persists, issue a documented balance adjustment through the platform manual credit gate before closing the monthly billing cycle.

IOSOR takeaway

This playbook demonstrated how systematically reconciling monthly DLR logs with platform ledger debits guarantees zero-variance financial reporting across multi-tenant sub-accounts. Aligning delivery receipts directly with ledger entries ensures that delayed webhook updates or carrier retries do not distort sub-account balances.