Estimate the cost of failed invoices, ERP rework, delayed collections, and audit cleanup.
Most companies budget for ASP fees and implementation. They often miss the cost of discovering readiness gaps too late.
This calculator estimates avoidable cost. What you spend cleaning up failed invoices, ERP rework, delayed collections, and audit evidence when a rollout is not properly readied. ASP and implementation fees are excluded.
Benchmark. 15 to 25% of invoices fail validation in the first 30 days after go-live when preparation is unstructured. Source: IOFM / SoftCo, 2026.
Finance review, tax review, correction, resubmission, customer or vendor follow-up, tracking.
Failed invoices delay cash. Average invoice value, days delayed, and your cost of capital size the financing impact.
Late changes to tax codes, invoice fields, master data, credit-note logic, integration mapping, testing, partner time.
Post go-live cleanup, evidence collection, reconciliation, external advisor support, management reporting.
This is the estimated cost of late discovery. Failed invoice handling, rework, audit cleanup, and collection delays.
A three-month stabilisation period is assumed for failed-invoice handling. ASP fees and implementation are excluded.
Cash tied up in failed invoices during the first month of go-live. Reported separately from cost above.
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Built from the values currently selected above.
Even with moderate ERP rework and moderate audit support, the total avoidable exposure clears AED 1.1M. A further AED 9.4M of cash sits trapped in failed invoices during go-live.
If readiness gaps are discovered post go-live.
Cash trapped in failed or delayed invoices in month 1.
Failed invoices, ERP rework, and audit cleanup almost always trace back to four things. Unmapped fields, broken master data, hidden tax logic, and no exception ownership. OneSig Atlas surfaces all four before go-live.
| Where the cost comes from | Without OneSig | With OneSig Atlas |
|---|---|---|
| Failed invoice handling | Discovered post go-live, fixed manually one by one | ✓ Failure modes simulated against PINT-AE before live transmission |
| Master data issues | TRN, endpoint, and designated-zone errors caught by the ASP | ✓ Flagged in advance with owner and fix path |
| ERP rework | Late changes to tax codes, fields, and credit-note logic | ✓ Gaps mapped on a canonical invoice schema before ERP changes |
| Audit evidence | Screenshots, emails, and reconciliations after the fact | ✓ Invoice-level audit pack with rule source, evidence, timestamp |
| Collections delay | Rejected invoices hold up customer payment cycles | ✓ Validation runs upstream of customer delivery |
| ASP onboarding gaps | ASP asks for required fields, but teams do not know source system, owner, or gap status | ✓ ASP-ready mapped file showing each required data point, source system, owner, gap status, and fix path |
At the end of the scan, you receive an ASP-ready mapped file that shows how your invoice data maps to UAE e-invoicing requirements. Each row tells finance, tax, IT, and the ASP exactly what is ready, what is missing, who owns it, and what needs to be fixed before onboarding.
What the ASP or mandate requires.
ERP, billing, AP tool, tax engine, spreadsheet, or master data table.
The actual field name or data location.
Finance, tax, IT, master data, AR, AP, or shared services.
Available, missing, inconsistent, needs transformation, needs business decision.
What needs to change before ASP onboarding.
What proof exists that the field was reviewed or validated.
| Data point | Source system | Source field | Status | Owner | Fix path |
|---|---|---|---|---|---|
| Buyer TRN | Customer master | tax_registration_number | Gap | Master data | Add missing TRN before onboarding |
| Invoice currency | ERP invoice header | currency_code | Ready | Finance systems | Validate AED and foreign currency scenarios |
| Credit note reference | Billing system | original_invoice_id | Gap | AR operations | Link credit notes to original invoice |
| Tax category | Tax engine / ERP | vat_code | Needs review | Tax | Map VAT codes to UAE treatment |
| Buyer address | Customer master | billing_address | Incomplete | Master data | Complete mandatory address fields |
Your ASP can help transmit the invoice. But your team still needs to know where every required data point comes from. The mapped file gives finance, tax, IT, and the ASP a shared starting point before implementation gets expensive.
We map your invoice scenarios, master data, tax logic, exception ownership, and required UAE data points before go-live. You also receive an ASP-ready mapped file showing where each required data point comes from, what is missing, who owns it, and what needs to be fixed before onboarding.
Estimates are illustrative and based on the inputs above. Failed-invoice handling assumes a three-month stabilisation period. Cash flow at risk reflects one month of failed invoices delayed by the configured days at the configured cost of capital. The model excludes ASP subscription fees, ERP licence costs, implementation partner fees, and any regulatory penalties. Benchmark failure-rate range (15 to 25%) sourced from IOFM / SoftCo 2026 e-invoicing readiness data.