Create enable-supported-barcode-format.md

Author: yqz5625

programming/javascript/faq/enable-supported-barcode-format.md

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+---
+layout: default-layout
+title: How to Enable Specific Barcode Formats with Your License?
+keywords: Dynamsoft Barcode Reader, FAQ, JavaScript, tech basic, barcode format, no license found
+description: When moving from a trial license to a production license, you may encounter the error `[xxx] No license found` if your enabled barcode formats don't match the formats supported by your license?
+needAutoGenerateSidebar: false
+---
+
+# How to Enable Specific Barcode Formats with Your License
+[<< Back to FAQ index](index.md)
+
+## Problem
+When moving from a trial license to a production license, you may encounter the error `[xxx] No license found` if your enabled barcode formats don't match the formats supported by your license. This occurs because the SDK validates enabled formats against your license's capabilities.
+
+## Solution
+Explicitly enable **only the barcode formats covered by your license** in your code configuration. 
+
+---
+
+### Step-by-Step Guide
+
+1. **Check Your License Coverage**  
+   Confirm which barcode formats your license supports (e.g., QR Code + 1D barcodes).
+
+2. **Configure Barcode Formats**  
+   Update your code to explicitly enable **only the licensed formats**.  
+   Example for enabling **QR Code only**:
+
+   ```javascript
+   let settings = await router.getSimplifiedSettings("ReadSingleBarcode");
+   // Enable QR Code only
+   settings.barcodeSettings.barcodeFormatIds = 
+     Dynamsoft.DBR.EnumBarcodeFormat.BF_QR_CODE;
+   await router.updateSettings("ReadSingleBarcode", settings);
+   await router.startCapturing("ReadSingleBarcode");
+
+3. **For Multiple Formats**
+   Use bitwise OR (|) to combine formats. Example for enabling QR Code + 1D formats:
+
+   ```javascript
+   // Enable QR Code only
+   settings.barcodeSettings.barcodeFormatIds = 
+     Dynamsoft.DBR.EnumBarcodeFormat.BF_QR_CODE|Dynamsoft.DBR.EnumBarcodeFormat.BF_ONED;
+
+4. **Verify Supported Formats**
+   View the complete list of supported barcode formats and their corresponding IDs here:[Barcode Format Documentation](https://www.dynamsoft.com/capture-vision/docs/core/enums/barcode-reader/barcode-format.html?lang=js&product=dbr)