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Author

ATCHAYA M

Developer

Updated on
13-02-2026

How E-Invoicing Works in the LEDGERS, Invoice Creation to IRN Generation

E-Invoicing is now mandatory for companies in India to comply with GST requirements. Businesses must create invoices electronically and upload them to the Invoice Registration Portal (IRP), where the invoice will be assigned a unique Invoice Reference Number (IRN). This has created a more complex and technical process that requires businesses to upload invoices using multiple different applications and systems.

LEDGERS makes this process much simpler for businesses by providing an integrated solution that allows users to create an invoice, generate an Invoice Registration Number (IRN), QR code, and acknowledgment details all within the accounting and billing system, without the need to switch between applications.

Creation of Invoices in LEDGERS

The initiation of e-Invoicing has begun when an invoice is created by a user in LEDGERS. When creating an invoice, all information needed to generate an IRN for that invoice is collected by LEDGERS. The information collected includes:

  • Supplier and recipient GST details
  • Document type and invoice number
  • Taxable value and tax breakup
  • Item-level HSN and quantity
  • Place of supply and supply type

At this point, LEDGERS has structured the invoice into the e-Invoice schema; therefore, it is highly unlikely that the e-Invoice created will get rejected later during the validation process. Rather than viewing e-Invoicing as a separate event from billing, LEDGERS has integrated it into their billing system. This enables the flow of accounting data and compliance requirements. When you fill out your accounting records using LEDGERS, you do not create an invoice as a separate event; rather, e-Invoicing is simply the extension of the billing cycle for you.  

Pre-validation Checks Upon Invoice Creation

Once an invoice has been created, LEDGERS performs a set of pre-validation checks to make sure the invoice being created has the required eligible information before an IRN can be generated. This prevents user from having to submit the invoice multiple times or have their submission rejected.

 Some of the standard checks LEDGERS performs include:

  • Missing or invalid GSTIN fields
  • Incorrect document number format
  • HSN or tax mismatch issues
  • Customer or place-of-supply inconsistencies 

If users resolve these issues before they send the invoice through the IRP to generate an IRN, they will avoid having to create an IRN again because of problems associated with that specific invoice.

Generating an Invoice Reference Number or Invoice Reference

  •  A unique Invoice Reference Number (IRN)
  • A digitally signed invoice payload
  • A QR code containing invoice authenticity details
  • Acknowledgement number and timestamp

Unique Invoice Reference Number (IRN) Digitally signed Invoice Payload QR Code with Authenticity Information for Invoice Acknowledgement Number & Timestamp All of the above information will automatically update back to your Invoice in LEDGERS and maintain both Authenticity & Traceability.

For the User Experience, this process appears as a seamless generation of IRN as part of the invoicing process; it is not a stand-alone technical process. 

Storing QR Codes & Acknowledgements

Every Approved e-Invoice is provided with a QR code which allows you to verify an invoice and reference audits. LEDGERS will embed the QR code automatically on the invoice format so you can:

  • Printed and digital copies can be validated anytime
  • Customers and auditors can scan and verify authenticity
  • The invoice remains compliant even when shared externally

 The Acknowledgement Number, Invoice Reference Number, and all information received from IRP will be stored securely for audits, reconciliations, and mapping your GST Returns back to your Invoice.  

Tracking & Continuity Procedures

After creation, an invoice that contains an IRN will be connected to downstream compliance through the LEDGERS system. This will allow for continuing with the following:   

  • GSTR-1 reporting
  • e-Waybill linkage (where applicable)
  • Accounting and revenue records
  • Audit and historical reference logs

 Instead of retaining multiple copies for each invoice or creating spreadsheets, the company has one source of information for each invoice.  

Reasons that Companies Prefer e-Invoicing through the LEDGERS System: 

  • Reduces manual effort and re-entry of data
  • Minimizes rejection risk through guided validation
  • Improves accuracy and record traceability
  • Supports large and small businesses with structured workflows

This creates a more effective and reliable e-Invoicing method in line with the way businesses generally operate on a day-to-day basis.

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