# Do not allow Billing of Same Item twice to a customer.

**YouTube Link:** [How to Stop an Item From Being Billed Twice to a Customer in Sale Bill ?](https://www.youtube.com/watch?v=7jbJRG1BUsg)

## How to Stop an Item From Being Billed Twice to a Customer in Sale Bill ?

Welcome to Logic ERP's tutorial on preventing billing twice for the same item to a customer.

#### Steps to Avoid Duplicate Billing

1. Navigate to the "Sales Voucher Configuration".
2. Select relevant billing series.
3. Activate the option "Do not allow billing of the same item twice to a customer".

<figure><img src="/files/5BCmSEWwjIRm7yWU0Nyb" alt=""><figcaption><p>Keep this feature Enable to observe its Impact</p></figcaption></figure>

#### Implementation in Sale Billing&#x20;

* Create a Sales Bill and add the required items and then Attempt to save the bill.
* When saving a bill, if you encounter an error message indicating duplication (e.g., item in row 3 already billed):

<figure><img src="/files/wocjePxdpttJ6wgZ2WnP" alt=""><figcaption><p>Prompt for Item has Already been Billed.</p></figcaption></figure>

* Delete the duplicate item from the specified row.
* Save the bill again.

#### Tips

* Always ensure changes are saved after adjustments.
* Regularly update your billing series configuration to prevent future errors.<br>


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