Validation and Error Handling

Early Detection, Fewer Headaches

In the world of digital tax compliance, an error discovered at the point of filing is a significant operational hurdle. Once an e-invoice is rejected by HASiL, it creates a break in your sequence and requires manual intervention. Our Pre-Submission Validation Engine is designed to catch these issues at the middleware level—milliseconds after your system sends the data.

We validate your transaction data against over 200 business rules defined in the LHDN SDK. This ranges from simple field existence checks to complex mathematical rounding validations and SST code alignment.

Smart Rule Engine

Our rule engine is continuously updated as LHDN refines their technical guidelines. Key validation areas include:

• Identity Validation: Checking TIN (Tax Identification Number) formats and IC/Passport structure.
• Mathematical Integrity: Ensuring line items, discounts, and tax totals sum up to the cent.
• Regulatory Alignment: Validating that industrial codes (MSIC) match the specific invoice type.

Actionable Error Feedback

When a validation fails, we don't just return a generic error code. The middleware translates complex LHDN technical responses into Human-Readable Feedback. Your finance team receives clear instructions on what is missing or incorrect, allowing for immediate correction within your ERP or POS interface.