SAP Digital Manufacturing Integration: RFC Calls via Integration Suite: Part 1

In this post I would like to introduce a simple example of how to call a remote enabled Function Module via RFC from SAP Digital Manufacturing.

The involved components are the following (see Integration Guide):

Prerequisites:

You have completed the Setup Guide. Especially relevant is the path marked in the picture:

DM Subaccount:
Destination: CPI_DESTINATION_IFLMAP

Cloud Integration Subaccount:
Destination: <YOUR_RFC_DEST>

Setup:

1. Select a remote enabled function module you would like to use

For example:

2. Make resource available in Cloud Connector

3. Check if Technical Integration User used for Destination <YOUR_RFC_DEST> has sufficient roles for this particular Function Module

4. Develop an integration artifact in Integration Suite

• To automatically get the structure of your Function Module it is easiest to get it from a Web Service. This Web Service does not need to be saved and is not used.
• Follow Path Utilities>More Utilities>Create Web Service>From the Function Module
• Click Through the Assistant
• Download the WSDL
• Close without saving
• Log Into Integration Suite as a Integration Developer “AuthGroup_IntegrationDeveloper”
• Go to Design Artifacts
• Create a Package
• Create a Integration Flow
• Connect Sender with Start HTTPS
• Disable CSRF Protection
• Add JSON to XML Converter
• Add Message Mapping on how to Create the Mapping
  For the source use for example Source.xsd as:

<?xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
        <xs:element name="root">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="MATNR" type="xs:string" />
            </xs:sequence>
          </xs:complexType>
        </xs:element>
</xs:schema>​

(note: for more advanced cases with occurrence != 1..1  use minOccurs maxOccurs)

Occurrence has to match for your connections. For example:

<xs:element name="item" minOccurs="0" maxOccurs="unbounded">

• For target use the wsdl you downloaded earlier.
• Connect everything up
  
• Create a request reply and connect it to receiver
  
• Put in the RFC Destination in your Cloud Integration subaccount
• Deploy artifact

Now you can call your artifact via postman under the url: https://<<your-url>>-rt.cfapps.<<your-region>>.hana.ondemand.com/http/RFC_adapter_test

Body (raw json):

Use Basic Auth with your Integration Suite user credentials.
In Part 2 of this series you will learn how to use this API in SAP DM