GST E-invoice portal and GST Portal mismatch query related to HSN/SAC summary

[milan bamal]

Friend, in my firm we issue service bills. For accounting and e-invoicing, I use the software HostBooks.

Now suppose I generate e-invoices for 10 bills through HostBooks. The software automatically considers a quantity of 1 for each bill, even though all the settings are correct.

However, when I upload the SAC summary on the GST portal, the quantity does not appear. This is because as soon as I enter a service SAC code, the quantity column gets disabled (frozen).

So on one hand, the e-invoice portal shows quantity for the bills, and on the other hand, the GST portal shows no quantity.

Will this create any problem in the future?

[Raam Srinivasan Swaminathan Kalpathi]

Dear Querist

Foremost, is there any loss of revenue to the GST department? The answer is a resounding NO.

Secondly, the issue highlighted is merely technical and breach venial. If I were in your position, I will blisfully ignore and go ahead.

[YAGAY andSUN]

Short answer-this will not create any issue, provided your value and tax reporting are correct.

Under GST law, for services (SAC), "quantity" is not a relevant or mandatory parameter. The schema for e-invoicing permits a default quantity (often "1") merely for system validation, since every line item requires a numeric field. That is why software like HostBooks auto-populates Qty = 1.

On the GST return side (GSTR-1), once you select an SAC, the quantity field is intentionally disabled, because services are not reported in terms of physical units. The law and return format focus on taxable value, rate, and tax amount, not quantity.

There is therefore no inconsistency in law between:

• e-invoice showing Qty = 1 (system-driven field), and

• GSTR-1 not capturing quantity for services.

From a compliance perspective:

• The Invoice Reference Number (IRN), taxable value, and tax amounts are the critical matching parameters.

• Quantity is not used for reconciliation between e-invoice data and GST returns for services.

Risk view:
No adverse consequence should arise merely due to this difference. This is a known system behavior across ERPs and is accepted in practice.

Practical safeguard:
Ensure that:

• Description of service, taxable value, and tax are correctly reported, and

• There is consistency between books, e-invoices, and GSTR-1.

As long as these are aligned, the presence of "1" as quantity in e-invoices for services will not trigger any future dispute or mismatch.

[milan bamal]

YAGAY andSUN

This issue related to quantity does not arise when we generate IRN of invoice for services through Tally software.

[Shilpi Jain]

Should not be an issue

AI Summary

GST e-invoice quantity mismatch for services is a technical issue where taxable value and tax reporting control reconciliation. A mismatch between service e-invoice quantity and the absence of a quantity field in the GST return for SAC-based services does not create a compliance issue where taxable value, tax rate, tax amount, service description, and other return data are correctly reported. For services, quantity is not a relevant reporting parameter under the GST return format, and e-invoicing software may populate a default quantity such as '1' only for system validation. The critical reconciliation points are the IRN, taxable value, and tax particulars, together with consistency across books, e-invoices, and GSTR-1.