OMAN E-INVOICING · INTEGRATION
Connect any billing system or custom application to Fawtara through APIs: send invoice data, receive PINT OM validation results and track delivery status in real time.
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OVERVIEW
Many businesses issue invoices from systems that are not standard ERPs: custom billing platforms, industry applications, subscription systems or e-commerce back ends. For these, an API integration is usually the cleanest way to meet Fawtara requirements.
Your system sends invoice data through a secure API. The data is converted to PINT OM, validated against Fawtara rules and passed to your accredited service provider, which delivers it to the buyer and reports to the OTA. Results come back as API responses or callbacks.
We help design the API flow end to end: which data your system sends, how errors are returned, how retries work and how statuses are stored, so developers have a clear specification and your finance team has reliable results.
API integrations suit businesses that want real-time feedback, high volumes and full control over how e-invoicing fits into their own applications.
CAPABILITIES
Send invoices, credit notes and debit notes through one API.
Immediate feedback on data errors before delivery.
Delivery and rejection statuses through callbacks or polling.
Authenticated, encrypted connections with access control.
COMMON CHALLENGES
These are the issues we see most often. Each one is planned for from the start, so it does not surface in the week before go-live.
01
Your system's fields need a clear mapping to PINT OM.
02
Rejections must be handled without creating duplicates.
03
The design must cope with month-end and campaign peaks.
04
Your team needs a clear specification to build against.
THE FAWTARA MODEL
Fawtara, the Oman Tax Authority's e-invoicing programme, uses a Peppol-based five-corner model. Invoices are issued in the PINT OM format and travel through an accredited service provider, which delivers them to the buyer and passes the tax data to the OTA. Invoices cannot be sent from an ERP directly to the OTA.
Step 1
In your ERP, accounting or billing system.
Step 2
Checked against PINT OM and Omani VAT rules.
Step 3
Your accredited service provider exchanges it over Peppol.
Step 4
Delivered to the buyer's own service provider and system.
Step 5
Tax data reaches the Oman Tax Authority through Fawtara.
HOW IT WORKS
We document the systems, data and approvals involved in your invoicing.
Fields, rules and exceptions are defined against PINT OM and Omani VAT rules.
The connection is built and tested with real invoices, including the edge cases.
After go-live, statuses and exceptions are monitored so nothing is missed.
WORKED EXAMPLE
How a monthly subscription invoice is issued through the API.
See It in a Demo →WHY IT MATTERS
Every in-scope invoice is issued in the PINT OM format from your go-live date.
Data is checked before it leaves your system, not after a buyer or the OTA flags it.
E-invoices are stored electronically, ready for audits and OTA requests.
Errors are known immediately, not days later.
Handles growth and peaks without manual work.
E-invoicing fits into your own application logic.
IN DETAIL
BEFORE YOU GO LIVE
Having these ready before the assessment shortens the project and keeps your Fawtara go-live on schedule. Our free Fawtara readiness checklist is a good place to start.
Free guides and checklists →
WHY WEBTEL
FAQS
It typically accepts structured JSON or XML, which is converted to PINT OM. We agree the exact specification during design.
Statuses come back through callbacks or polling, so your system always knows the final result.
Yes. Each submission carries a unique reference, so retries do not create duplicates.
Fawtara uses PINT OM, the Omani specification of the Peppol International invoice model, exchanged as structured XML through an accredited service provider.
No. Under the five-corner model, e-invoices travel through an accredited service provider, which delivers them to the buyer and passes the tax data to the OTA.
It depends on your system, the number of invoice types and the quality of your data. We give you a dated plan after the assessment, working back from your Fawtara phase.
EXPLORE MORE
Talk to our team about your systems, your phase and your go-live date.