> 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-learning-hub-tutorials-and-best-practices/reports-queries/item-report/barcode-labels-printing/barcode-labels-printing-configuration/encrypted-rate-prefix.md).
# Encrypted Rate Prefix
**YouTube:** [How to Encrypt Rates in Barcode Label Printing?](https://youtu.be/e2vzqmDAheM)
## How to Encrypt Rates in Barcode Label Printing?
In this tutorial, we will learn how to configure the **"Encrypted Rate Prefix"** in Logic ERP to add a predefined prefix before encrypted rate values displayed on barcode labels.
***
### Objective of This Feature
* Encrypt rate values on barcode labels
* Add a customized prefix before encrypted rates
* Improve rate confidentiality
* Map numeric values with unique alphabets
* Control how encrypted rates are displayed on barcode labels
***
### Observe the Default Rate Display
* Navigate to the **Barcode Label Printing** module.
* Select the required **Purchase Voucher**.
* Select the required item and click **Create**.
* In the Barcode Printing Design Selection window, click **No**.
* Click **Open** and select the required barcode design.
**Result**
The rate values are displayed in their **normal numeric format without encryption**.
***
### Configure Number-to-Alphabet Mapping
* Open the **Assign Alphabets to Number** module.
* Here, numbers from **0 to 9** are displayed in the Number column.
* Assign a unique alphabet against each number.
* Save the configuration.
**Note**
This number-to-alphabet mapping is used by the software to convert numeric rate values into their encrypted format during barcode label printing.
***
### Enable Rate Encryption Feature
* Return to the **Barcode Label Printing** module.
* Open the configuration.
* Locate the **Display Encrypted** section.
* Select the rate field for which encryption is required.
**Example**
* Select **MRP** as the rate field.
* Now print the barcode again without configuring an encrypted rate prefix.
**Result**
* The MRP is now displayed in its **encrypted format**, but no prefix is displayed before the encrypted rate.
***
### Configure Encrypted Rate Prefix
* Return to the **Barcode Label Printing Configuration**.
* Locate the **"Encrypted Rate Prefix"** option.
* Enter the required number as the prefix.
* Save the configuration.
**How It Works**
* The number entered as the prefix is linked to an alphabet through the **Assign Alphabets to Number** configuration.
* The corresponding alphabet is then displayed as a prefix before the encrypted rate on the barcode label.
***
### Verify the Encrypted Rate Prefix
* Select the same **Purchase Voucher**.
* Open the barcode design.
* Preview the barcode label.
**Result**
The configured prefix is now successfully displayed **before the encrypted MRP** on the barcode label.
***
### Key Benefits
* **Rate Confidentiality:** Keeps actual rate values concealed on barcode labels.
* **Custom Prefix:** Allows a predefined prefix to be added to encrypted rates.
* **Flexible Mapping:** Supports customized number-to-alphabet encryption.
* **Better Data Security:** Makes actual rates difficult to interpret directly.
* **Controlled Display:** Lets users choose which rate fields should be encrypted.
***
### Important Note
The encrypted rate prefix works in combination with the **Assign Alphabets to Number** mapping. Make sure each required number has a corresponding alphabet before configuring the prefix.
***
### Final Outcome
After configuring **"Encrypted Rate Prefix"**, Logic ERP displays the selected rate in encrypted format on the barcode label, with the configured alphabet prefix automatically added before the encrypted rate.
---
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