We have action hooks that gets triggered after a transaction. You can use that hook to create your custom processing after a transaction.
So you can create a custom plugin that listens to the hook and then does the additional processing after the transaction.
Side note: I know that some of our users don’t have the coding expertise required to handle the complex customization required for that particular project/business. If you want us to understand your particular business scenario and provide help with coding then that will need to be handled as a custom job. You can use the following page to get in touch for a custom job: