# Fix Place of Supply-Wise Tax Validation Errors in GSTR-1
**YouTube:** [How to Correct Place of Supply - Wise Tax Validation Errors in GSTR-1?](https://www.youtube.com/watch?v=UTcu_UzP5h8\&t=1s)
## How to Correct Place of Supply - Wise Tax Validation Errors in GSTR-1?
In this tutorial, we will guide you through the process of resolving **Place of Supply (POS) wise tax validation errors** while generating **GSTR-1 in Logic ERP**.
***
#### **Generate GSTR-1 Return**
* Navigate to the **GST Returns** module.
* Select **GSTR-1** as the return type.
* Choose the **relevant time period** for which you want to generate the return.
* Click on the **Generate** button.
Upon generation, the system may display an **Invalid Data Error**.
***
#### **Identify the Error**
* In the **Export** section, notice the **red flag icon** next to the affected entry.
* The system message indicates:
> “CGST/SGST tax is not allowed in export entries. Only IGST is allowed.”
* You can also review detailed information under the **GSTR Error Details** section, which specifies that the issue is related to **POS (Place of Supply) wise tax validation** in one of the export invoices.
***
#### **Open and Correct the Export Bill**
* From the **Export** section, click on the **Invoice Number** to open the respective bill.
* Once the sales bill opens, **change the Tax Region** from **CGST/SGST** to **IGST**.
> If the **Save** button is locked:
>
> * Turn off the **Num Lock** key on your keyboard.
> * Press **Alt + Insert** to unlock the Save button.
* After unlocking, **save the bill**.
***
#### **Regenerate the GSTR-1**
* Close the export bill window and return to the **GSTR-1** screen.
* Click on **Generate** again to refresh the data.
* The red flag that appeared earlier will now turn **green**, indicating that the POS-wise validation issue has been **successfully resolved**.
In the **GSTR Error Details** section, you’ll notice that the **POS-wise error count** has now reduced to **zero**, confirming the correction.
***
#### **Prevent Future Errors (Optional Configuration)**
To avoid similar errors in the future:
* Go to **Setup → New Account**.
* Select the relevant **Export Party Account**.
* Set the **Tax Region** to **IGST** by default.
* Save the changes.
This ensures that all future export transactions are automatically configured with the correct tax region.
***
#### **Export and Upload GSTR Data**
Once the validation is complete:
* Return to the **GSTR-1** screen.
* Choose to **Export Data to Excel** or **Generate a JSON File**.
* Click **Upload**, and the data will be successfully exported to an Excel file.
Next:
* Open the **GST Offline Tool**.
* Click **Proceed**, then select **Import Excel**.
* Choose the recently exported file and click **Yes** to import the data.
The return details will now be successfully added.\
You can **view the summary** and finally click on **Generate File** to complete the process.
***
#### **Result**
You have now successfully resolved the **Place of Supply (POS) wise tax validation error** and generated an accurate **GSTR-1 return** with correct tax region configuration.
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