> ## Documentation Index
> Fetch the complete documentation index at: https://docs.propaga.mx/llms.txt
> Use this file to discover all available pages before exploring further.

# Send Credit Limit Update

> This webhook is used when the credit limit of a user is updated by the system

## Webhook Endpoint

You should configure your webhook endpoint to receive POST requests from Propaga. The webhook will send the credit limit update data in JSON format.
Please contact us to set up the webhook.

## Payload Structure

Here's an example of the webhook payload you'll receive:

```json theme={null}
{
  "userId": "671f75a4-f145-4f4b-82ff-4eaf0fd1e5aa",
  "cornerStoreId": "57b9d911-1c6e-45c0-be98-bfaeec8d9cf8",
  "externalId": "123456789",
  "newCreditLimit": 1000
}
```

### Payload Fields

| Field            | Type   | Description                        |
| ---------------- | ------ | ---------------------------------- |
| `userId`         | String | The Propaga's ID of the user.      |
| `cornerStoreId`  | String | The ID of the corner store.        |
| `externalId`     | String | The ID of the user in your system. |
| `newCreditLimit` | Number | The new credit limit of the user.  |

## Handling the Webhook

Here's an example of how to handle the webhook in different programming languages:

<CodeGroup>
  ```javascript JavaScript theme={null}
  app.post('/webhook/credit-limit-update', async (req, res) => {
    try {
      const creditLimitUpdate = req.body;
      
      // Process the credit limit update data
      await processCreditLimitUpdate(creditLimitUpdate);
      
      // Respond with success
      res.status(200).json({ status: 'success' });
    } catch (error) {
      console.error('Error processing credit limit update:', error);
      res.status(500).json({ status: 'error', message: error.message });
    }
  });

  async function processCreditLimitUpdate(creditLimitUpdate) {
    // Validate the credit limit update
    console.log(`Processing credit limit update: ${creditLimitUpdate.id}`);
    console.log(`Status: ${creditLimitUpdate.status}`);
    
    // Process each transaction
    console.log(`User ID: ${creditLimitUpdate.userId}`);
    console.log(`External ID: ${creditLimitUpdate.externalId}`);
  }
  ```

  ```python Python theme={null}
  from flask import Flask, request, jsonify

  app = Flask(__name__)

  @app.route('/webhook/credit-limit-update', methods=['POST'])
  def handle_credit_limit_update():
      try:
          creditLimitUpdate = request.json
          
          # Process the credit limit update data
          process_credit_limit_update(creditLimitUpdate)
          
          return jsonify({'status': 'success'}), 200
      except Exception as e:
          print(f'Error processing credit limit update: {str(e)}')
          return jsonify({'status': 'error', 'message': str(e)}), 500

  def process_credit_limit_update(creditLimitUpdate):
      # Validate the transfer amount
      print(f"Processing credit limit update: {creditLimitUpdate['id']}")
      
      # Process each transaction
      print(f"User ID: {creditLimitUpdate['userId']}")
      print(f"External ID: {creditLimitUpdate['externalId']}")
  ```
</CodeGroup>

## Best Practices

1. **Verify the Webhook Source**: Implement security measures to verify that the webhook is coming from Propaga.

2. **Implement Idempotency**: Store the `referenceNumber` to avoid processing the same conciliation multiple times.

3. **Handle Errors Gracefully**: Implement proper error handling and logging to track any issues with webhook processing.

4. **Respond Quickly**: Your webhook endpoint should respond as quickly as possible. If processing takes time, handle it asynchronously.

5. **Validate Data**: Always validate the incoming data before processing it.