What is the best way to send XML from Appian to REST Service

Have a look at suite/help/16.2/HTTP_Query_Smart_Service.html

@rodgraham
Yeah i know we have function as well for the same operation. I have gone through all the possible areas but i would like to know which would be the best option for this requirement
Thanks...!!

you may also refer this link: forum.appian.com/.../Connector_Functions.html

@mohammedz, You have these options:
1. a!httpWrite() function - This can be used from SAIL form. It returns a writer. So, you need to use it in SAIL form.
2. Use the HTTP Query Smart Service from the process model. You can use the POST request and pass the data. You may need to specify the application or content type in the headers of the request to specify that you are passing XML in the body/headers. I would prefer this, as it is easy to setup/configure(compared to the function where you need to use it in SAIL form in combination with bind() ). If possible, you could also create a reusable process model for this, and call it from a SAIL form in a saveInto using the a!startProcess function.

@mohammedz when you will use a!httpWrite you will have to also define the content type that you can do in header and set its content type to xml
a!httpHeader(
name: "Content-Type",
value: "text/xml"
)

Content-Type => text/xml; charset=utf-8

@chetany - I am using service from PM

We have two smart service
1) HTTP Query
2) Send HTTP Request

Is both the Smart service are same or for sending XML which would be reliable and preferable ?

I would suggest HTTP Query smart service. The reason is that - the "Send HTTP Request" is not a built-in smart service. It comes from a plugin.

@cheatan,
I am using toxml function to convert a CDT into XML format.
If i need to POST the xml in which parameter in the node i need to pass the same ?
Can you please share ur view