> For the complete documentation index, see [llms.txt](https://kb.logicerp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kb.logicerp.com/logic-erp-installation-configuration-and-troubleshooting-solutions/faqs/gst/hsn-code-error-in-gst-returns.md).
# HSN Code Error in GST Returns
**YouTube:** [How to Correct Blank HSN Codes While Creating GST Returns?](https://www.youtube.com/watch?v=Hm2fe6-p808)
## How to Correct Blank HSN Codes While Creating GST Returns?
### **Tutorial: How to Identify and Correct Blank HSN Code Entries in Logic ERP**
In this tutorial, we’ll learn how to identify and correct **blank HSN code entries** to ensure your **GST return** is accurate and error-free.
***
#### **Open the GST Returns Module**
* Navigate to the **GST Returns** module.
* Select the desired **GST return type** (e.g., GSTR-1, GSTR-3B, etc.).
* Choose the **time period** for which you want to generate the return.
* Click on the **Generate** button.
***
#### **Identify Blank HSN Code Entries**
* Click on the **HSN column** to view the detailed HSN data.
* As shown, any **blank HSN column** indicates that the corresponding item was transacted **without an assigned HSN code** in the Item Master.
**Note:** Submitting a GST return with missing or incomplete HSN codes may result in rejection or incomplete filing.
***
#### **Open the HSN Allocation Module**
* Navigate to the Setup\Setup Items and then select **"Allocate Items to Harmonious Codes/Descriptions".**
* Click on **Select Items** to open the item selection window.
* Open the **HSN Code Filter** dropdown and choose **Nil** to filter only the items that do not have an assigned HSN code.
* Click **Search** — all items without HSN codes will be listed.
***
#### **Assign the Correct HSN Code**
* Select the item with the blank HSN code and click **OK**.
* Click on **Refresh** to load the selected item.
* To allocate a new HSN code, press the **Spacebar** to open the **HSN Code Search Window**.
* Note: If you want to change multiple HSN codes, press **F2**, and make sure the **Overwrite HSN Code** option at the top is ticked.
* From the list, select the correct **HSN code** corresponding to the product.
* Click **Save** to update the details.
***
#### **Verify in GST Return**
* Return to the **GST Returns** module.
* Regenerate the GST return for the same period.
* Check the **HSN column** again — the previously blank field now displays the correct **HSN code**, confirming that the issue has been successfully resolved.
Your GST return is now complete and ready for submission without any missing HSN code entries.
---
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