CCAvenue avoid Error Code 21001 order id required parameter missing

In this tutorial, we will see how to avoid Error Code 21001 order_id required parameter missing.
This is a usual problem that occurs after connecting our application to the CCAvenue payment gateway. But, it is not a big issue to solve.

CCAvenue is one of the leading online payment gateway service provider similar to other popular providers PayPal, Citrus, PayUMoney etc. Easy integration is an advantage of CCAvenue payment gateway. But, due to very minor mistakes in coding, developers get few errors while integrating CCAvenue with their application.

CCAvenue have provided some guidelines of integration that are necessarily needed to follow while integrating it into the application. It includes some parameters or inputs that are minimum required like amount, currency, merchant_id, redirect_url, cancel_url etc. If we avoid them or forgot to use them into the code, CCAvenue throws the error.
As mentioned above Order Id is one of the required values that should be mentioned in code while integrating with an application. Developers either forgot to mention it or mention it in wrong way.

What mistake developers make:

If you see below code, you can find a line with yellow background having a line with an input name order_id. This line of code is the reason behind the error code 21001 order_id required parameter missing. Developers mostly make 3 type pf mistakes:
1. Forgot to add an input with name order_id in the form,
2. Forgot to assign the value to order_id input,
3. Assigns the wrong value to order_id input. (Order Id should be alphanumeric but developers sometimes use special characters as well).

<table>
  <tr>
    <td>Parameter Name:</td><td>Parameter Value:</td>
  </tr>
  <tr>
    <td colspan="2"> Compulsory information</td>
  </tr>
  <tr>
    <td>TID:</td><td><input type="text" name="tid" id="tid" readonly /></td>
  </tr>
  <tr>
    <td>Merchant Id:</td><td><input type="text" name="merchant_id" value="xxx"/></td>
  </tr>
  <tr>
    <td>Order Id:</td><td><input type="text" name="order_id" value="123654789"/></td>
  </tr>
  <tr>
    <td>Amount:</td><td><input type="text" name="amount" value="10.00"/></td>
  </tr>
  <tr>
    <td>Currency:</td><td><input type="text" name="currency" value="INR"/></td>
  </tr>
  <tr>
    <td>Redirect URL:</td><td><input type="text" name="redirect_url" value="http://localhost/ccavResponseHandler.php"/></td>
  </tr>
  <tr>
    <td>Cancel URL:</td><td><input type="text" name="cancel_url" value="http://localhost/ccavResponseHandler.php"/></td>
  </tr>
  <tr>
    <td>Language:</td><td><input type="text" name="language" value="EN"/></td>
  </tr>
</table>

The Solution

1. Don't forgot to add order_id input,
2. Assign the value to the order_id input,
3. Assign proper value (only alphanumeric no special characters) to the order_id input

So, in this tutorial we have discussed how to avoid Error Code 21001 order_id required parameter missing. Hope, this is useful for you to avoid the error caused by minor mistakes. Please share this post if you like this.