Is it possible to have a Business Event call Custom Code in Acumatica?

When my user adds an appointment, he wants to have 2 things happen:

Send an acknowledgement of the appointment to the customer's cell phone, with information about the appointment
24 hours before the appointment, to have a reminder sent out

The main issue is that the event screen displays dates as UTC. This, of course, confuses the customer. So, I need to change the date and format the text message via code.

When I first did this, there was no way to call a custom method from a business event -- so I actually send the message up to Twilio, catch that with a Webhook that sends it into my custom DLL. That massages the message, making everything look right, and then sends it back through Twilio to the customer.

But this is costly (2 messages sent and 1 received for every event) and needlessly complicated. I want to simplify it now, because I have been told there is added functionality in Business events now that allows a call out into custom code. Is this true?

I was told that this would be available starting in 2020 R2. I am looking for it in the docs and training classes, but I can't see anywhere that this is possible.

How do I call custom code from a business event? Can I set up a subscriber that is in a custom DLL?

Is there something that describes this process somewhere? Or did this never make it into the product?

Solution

If you're looking to implement a custom Business Event subscriber (coded in your own dll), I know that is possible in 2021 R1.

There are basic instructions in the Release Notes for Developers starting on page 15.

The upshot is you need to reference the PX.BusinessProcess.dll and implement the PX.BusinessProcess.Subscribers.ActionHandlers.IEventAction interface and either of the PX.BusinessProcess.Subscribers.Factories.IBPSubscriberActionHandlerFactory or PX.BusinessProcess.Subscribers.Factories.IBPSubscriberActionHandlerFactoryWithCreateAction interfaces.