How do I update customer data after bill generation without canceling the bill if IRN is not generated?

Factech allows admin users with billing and customer update rights to modify customer details in a generated invoice only if the IRN (Invoice Reference Number) has not been generated. This is because the invoice hasn’t yet been pushed to the GST e-invoicing system. You can update the following fields for the unit or tenant, as bills may be generated for either owner or tenant.

• Customer Name
• Address
• GSTIN
• State Code must be a numeric value between 01 and 38.
• Place of Supply (POS) must also be a numeric value between 01 and 38.
• Location
• Pin Code
• Is Business

Steps to update unit and tenant details:

• Go to Customer menu → Search Unit.

• Select the unit → Click Search → Click View Unit Details.

• To update unit/owner info: click Edit, update fields (GSTIN, Pin, etc.), then click Update button.

• To update tenant info: click Edit, fill in details, and click Update.

Steps to update user details in a generated invoice:

• Go to Bill menu → Search Bill.

• Select the Unit and Bill Plan, then click on Search.

• Select the bill and click Update Customer Data.

• After updating, click Regenerate PDFs to generate all updated invoices.

Clicking Regenerate PDF under Action will generate only that single invoice PDF.

Important Note: – Once the IRN is generated, customer data in the invoice cannot be updated. As per GST rules, the invoice can be cancelled within 24 hours of creation, and a new invoice with a different number can be generated.