Retrieving data when invoking an action

Thanks for the quick reply.  My requirement REST API invocation is:

1. Provide data to a screen
2. Screen performs a calculation based on provided data and db lookup(s).
3. screen needs to update the DB with a log entry that this request occurred
4. return some field values as a result, which also serves a success/failure.

What might be the best REST API approach to take and where (which event handler) to perform the Calc, db lookup(s) and logging?

I am Validating information from the client against the Acu system and need to 1) return some information and 2) log the fact that an inquiry was made.     As an example, verify the status of a customer.  calling system provides an AcctCD and system returns the account name and status, and log the fact that an inquiry was made and the acctcd used.  If the acctcd is not found, that needs to be logged as well and a “notfound” status returned.  This is a simplified example.  I have a screen working that performs all of these steps and uses an action to perform the actual “Check”, but as you mentioned, REST API can’t return a name and status value after invoking an action.  Looking for general guidance on how to accomplish this.

Logging on the receiving system is the requirement.  Sounds like the Acumatica system doesn’t support this.

It sounds like a webhook might be what you want. You can feed any data to the webhook, process it in any way and return whatever data you want as a result of the calculations or logic that you want.

So, in your example, you can accept the JSon payload, log the who/when/what of the request, perform the look up and then send back a JSon payload with the results of the lookup.