ERP Audit Consultant, Oman

What this audit is, and what it is not

Omani finance teams are often small, and the people who run the ERP also prepare the VAT return, pay suppliers and support the external auditor. When the system misbehaves, they absorb the problem with extra checking rather than escalating it. An ERP audit gives management an independent, documented view of where that extra work comes from and how to remove it.

The review is a system health check. It examines configuration, data, integrations, controls and reporting inside the ERP. Statutory audit work stays with your auditor; I express no view on whether the accounts are fairly stated. Nor is it tax advice: wherever VAT treatment is involved, I describe what the system does and list the question for your tax advisor to answer.

Situations where this kind of review earns its place in Oman:

• Recurring small differences between subledgers, VAT reports and the general ledger.
• Bank files that are regularly rejected or edited by hand.
• A new finance manager or owner who wants an honest picture of the system they rely on.
• Plans to add a company, a branch or an online sales channel to the same ERP.
• Uncertainty about whether customer data is ready for the coming e-invoicing framework.

The review framework in general terms appears on the ERP health check page.

Finding the baisa: three-decimal rounding checks

Most ERP products were designed around currencies with two decimal places. They can handle the Omani rial, but only if precision is set correctly everywhere: in the currency definition, price fields, tax calculation, reports, print templates and every connected system. A single setting missed in one place is enough to create differences that reappear every month.

The rounding review uses worked examples from your own data:

• Invoices with many lines, discounts and VAT, recalculated outside the system to see whether rounding happens per line or on the total, and whether that matches your agreed policy.
• Credit notes and partial returns, where rounding on the original and the reversal can differ.
• Purchase invoices in foreign currency converted into rial, and the exchange differences posted on payment.
• Bank payment and salary files, checked for amounts truncated or rounded to two decimals.
• Feeds from point-of-sale systems, ecommerce stores or logistics tools that may send amounts with fewer decimals than the ERP expects.
• Reports and printouts that display two decimals while the ledger holds three.

For each difference found, I identify the setting or integration responsible, where the residual amount is being posted and how to stop it. Some fixes are simple configuration changes; others need your partner or integration provider. The aim is a system where rounding is predictable and documented, so finance no longer has to chase baisa at month-end.

VAT configuration and e-invoicing readiness

The Oman Tax Authority runs VAT, and the ERP has to record every supply with the right treatment so the return can be prepared from system reports. In a live system, I trace a sample of sales and purchases through tax code selection, posting and the return report, looking for patterns such as defaults that override item settings, imports booked without the expected entries, or credit notes posted to the wrong period.

I do not decide which treatment is correct. Each observation is written with document references and handed to your tax advisor, who confirms whether anything needs to change. Once they have, the configuration can be corrected once rather than adjusted manually every period.

Oman is introducing an e-invoicing framework, and its detailed requirements and timing are set by the authority. Rather than guessing at them, the audit checks what any implementation is likely to need from your data:

• Customers' tax registration numbers recorded consistently and in the right field.
• Legal names and addresses that match registration details.
• Clean invoice numbering by company and branch.
• Credit notes linked to the invoices they adjust.
• Item descriptions clear enough to appear on a formal tax document.

Cleaning this data now is low-risk and makes any later connector work considerably easier.

In-Country Value data, WPS payroll and user access

Suppliers to energy companies and other major buyers in Oman are often asked to report In-Country Value information, such as spend with local suppliers and Omani staffing. Where that applies, I check whether the ERP holds the data needed: supplier classification, spend by category and period, and links to HR records. If the report is built by hand from exports each time, the audit notes how much of it could come directly from the system. The reporting requirements themselves come from your customers and their programs, and I take them as given.

Payroll is reviewed at the point where it meets finance. I check how the WPS salary file is generated, whether it reconciles to the payroll journal and whether rounding in allowances or deductions causes differences. Labor law and social insurance rules are matters for your HR advisor.

The access review covers:

• Who can create suppliers and change bank details.
• Whether the same user can raise, approve and pay a purchase.
• Shared logins used by branches, stores or the partner.
• Accounts belonging to staff who have left.
• Rights to change prices, tax codes or closed periods.

In a small team, perfect segregation is rarely possible. Where it is not, a brief exception list that the owner signs off each month gives a practical safeguard.

Reports, licenses and the findings report

The final part of the audit looks at what management sees. I take the reports used in management meetings, such as sales by customer, stock value, receivables ageing and branch profitability, and test a sample against the ledger and the underlying documents. Where a report and the ledger disagree, the cause is identified, whether that is a rounding setting, a missing cost price, an unposted adjustment or a filter. I also list spreadsheets that duplicate system reports and ask why they exist.

Licenses and subscriptions are compared with active users and modules in real use. Modules planned for a second phase that never started can stay on the invoice for a long time, and the audit makes any such cost visible.

Everything comes together in a written report ranked by business impact and effort. Each finding has a worked example, the likely cause and a recommended fix, with items separated for your finance team, your implementation partner and the owner. VAT questions are listed separately for your advisor. I present the report remotely. Improvement work afterwards can follow the ERP optimization approach. If your rollout is still unfinished or unstable, see ERP rescue in Oman; for general context, visit the Oman overview or the Oman ERP consultant page.