# Validate Duplicate GST No. As

**YouTube:** [The Best Methods To Validate Duplicate GST Number In Logic ERP Software](https://www.youtube.com/watch?v=xfgIK2kixeA)

## The Best Methods To Validate Duplicate GST Number In Logic ERP Software

This tutorial demonstrates the methods available in **Logic ERP** to validate duplicate GST numbers when creating a new account.

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### Access Account Setup

* Navigate to the Setup > Setup Accounts and the click on "Setup New Account"
* At the bottom, use the shortcut key **F5** to open the **configuration settings**.
* Locate the option labeled as

> **“Validate Duplicate GST No. As”**.

* You will find **two validation methods**:
  * **Prompt if GST number already exists**
  * **Do not allow saving if GST number already exists**

<figure><img src="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FmCdqPDEEHx3yIiZTBy1c%2FConfiguration%20Settings.png?alt=media&#x26;token=6fe34ca4-c326-4702-8f71-9c3505fc4cb7" alt=""><figcaption></figcaption></figure>

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### Method 1: Prompt if GST Number Already Exists

* Select the option **Prompt if GST number already exists**.
* Save the changes.
* Copy the GST number from an existing account.
* Create a **new account** and paste the same GST number.
* When saving, the system displays a **prompt message**:

  > *“GST number already exists for another party. Do you want to continue with the same GST number?”*

<figure><img src="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FU7Wh7laQ86xzeETE22UD%2FAlready%20Exist.png?alt=media&#x26;token=e1cf4347-bc76-4415-aa39-e6c869c3ef0d" alt=""><figcaption></figcaption></figure>

This method allows flexibility—you can still save the account if required, but with a warning.

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### Method 2: Do Not Allow Saving if GST Number Already Exists

* Select the option **Do not allow saving if GST number already exists**.
* Save the changes.
* Create a **new account** and paste an existing GST number.
* On saving, the system displays an **error message**:

  > *“GST number already exists.”*

<figure><img src="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FHezCYldy0Ij6V3w4WIuq%2FDo%20not%20allow%20Saving.png?alt=media&#x26;token=93df552c-027d-4568-bbbe-44c751a414f1" alt=""><figcaption></figcaption></figure>

* The software **blocks the account creation** until a unique GST number is entered.

This method enforces **strict compliance**, ensuring no duplicate GST numbers are allowed.

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### Comparison of Both Methods

| Validation Method                    | System Behavior                                          |
| ------------------------------------ | -------------------------------------------------------- |
| **Prompt if GST already exists**     | Shows a warning; user can choose to continue or cancel.  |
| **Do not allow saving if duplicate** | Prevents saving; duplicate GST numbers are not accepted. |

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### Key Benefits

* Ensures **data accuracy** in customer/vendor accounts.
* Prevents **duplicate GST registrations**.
* Provides both **flexible** and **strict validation** options as per business needs.