Hi Nagendra,By default, external Api only does a GET call to the
external endpoint. In order to do a POST call, there has to be some json
in Post Body Template section under Inbound Mapping tab in External Api
activity. 1. Either you can add a query (or similar) activity before
externalApi activity and define some field mapping in the Inbound
columns section.2. Or you can add some random valid json in the
Customize Parameter section.This will then get added to the postbody
template section and w...
I'm assuming you don't have access to the Message Center execution
instance.You will need support's help to create the same option on RT
side. This option will not get published as part of the template
publishing and hence has to be manually created.