Let me first outline the customer purchase order and book keeping flow:

1. Customer fills out form to be subscribed to our membership

2. They are charged through Auth.net and set up with a subscription with ARB (Automatic Recurring Billing)

3. Using Auth.net's silent post URL, information is sent to Zoho CRM

4. Every month (on the same date they began the subscription), they are charged once again. For this step, an invoice should be sent with the status of paid to the customer to inform them that we billed them.

And that's it. Should be simple enough, and I am now on the last step but I can not find any information about how to automatically create Zoho invoices and send them to the customer. The key ingredient here being that they are automatically generated when Authorize.net charges the customer. 

One of the main reasons I need to use Zoho invoice in a programmatic manner is to easily generate aging reports. It would be a shame to just have to waste time custom coding the service when aging reports already exist and are a part of Zoho Invoices. 

Does anything that can do step 4 exist? If not, can I just add to the silent post url script using Zoho's API so that an invoice is created? 

Thanks,

Gabe

P.S. Bonus points to whoever gives a useful answer (i.e. not just telling me it is on the road-map)