accces to rest resource

Question

I created apex class with @RestResource. And @HttpPost method to use this code as Resource as the webhook URL, but the class is not invoking, please help here

CLASS:

@RestResource(urlMapping='/Razorpay/*')
global class WebhooK_for_RazorPay 
{
    
    @HttpPost
    global static void ResponseFromPaymentLInk()
    {
        
        
        RestRequest request = RestContext.request;
        system.debug('The request '+  request );
        RestResponse response = RestContext.response;
        system.debug('The response '+  response );
        
    }
     
}

Webhook URL:

https://techforceservices18-dev-ed.develop.my.site.com/services/apexrest/Razorpay

used in Razorpay

Answer 1

You should add the permission to the apex class and every other resource needed (i.e. Object Permission, Field-Level Security) to the Guest User.
To open the Guest User profile start from Setup, search for "Sites and" and click on "Sites", then on your site's name and on Public Access Settings button.
In the profile page you should click on Enabled Apex Class Access then on Edit button, add the needed classes and click Save.

Instead of modify the profile, you could create a Permission Set and add it to the Guest User (From the profile page there is a View users button). I think this would be a better approach due to the end of life of permissions on profiles, moreover permission sets can be added to managed and unmanaged package.

Answer 2

I gave access to the "Guest User" profile for the class