Add comments to (incident) record via Scripted REST API

[Yonka Yonkova1]

Hi all, 

How can I add comments to a record, for example in the 'Incident' table, via a Scripted REST API? 

What is the right method? 

I tried PATCH and PUT and they are working for every other field. 

I read that the 'comments' field is special as it relates to another table but I still cannot find a way to post a comment. 

Thank you in advance for your help. 

[Weird]

There shouldn't be anything special about it when updating.
Yes, comments and work_notes are stored in a separate table and work in a special way, but you should be able to update them with a regular put message.
How do you build your message? How does it look like?
I made this as an example with the built in REST Api Explorer with PUT method and it updated an incident without issues.

request.setRequestBody("{\"comments\":\"Hello\"}");

[yonkata]

Hi, 

Thank you for your reply. 

Where is this defined exactly? Could you please provide a screenshot? 

Thank you in advance. 

[Weird · Accepted solution]

In REST API Explorer you can create examples of REST Messages.
Here's an example where I create a PUT message that updates the specified incident with Additional comments "Hello".

var request = new sn_ws.RESTMessageV2();
request.setEndpoint('https://your_instance.service-now.com/api/now/table/incident/your_sys_id');
request.setHttpMethod('PUT');

//Eg. UserName="admin", Password="admin" for this code sample.
var user = 'admin';
var password = 'admin';

request.setBasicAuth(user,password);
request.setRequestHeader("Accept","application/json");
request.setRequestHeader('Content-Type','application/json');
request.setRequestBody("{\"comments\":\"Hello\"}");
var response = request.execute();

As you can see the body is set to "{\"comments\":\"Hello\"}"

There are many ways to write the REST message, but technically if you've been able to update any other fields, then comments should work just as well.