## Documentation Index Access the complete documentation index at: https://www.zoho.com/in/books/kb/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](./) # Why does the HSN summary not match the Sales By Item report? The value in HSN summary is different from Sales By Item report due to below reasons: * In the Sales By Item report, the data is not based on the tax association of transactions (whether tax is applied to a transaction or not). However, the data shown in the HSN summary includes only taxable transactions. * In the Sales By Item report, only items created from the **Items** module are reflected. If you have associated any _Service_ Item (typed as a description) while creating an invoice, those will not be displayed. However, in the HSN summary, all items will be displayed. * * *