ARC-101 practice question 6 of 25

A company needs to integrate a legacy on premise application that can only support SOAP API. After the Integration Architect has evaluated the…

Choose your answer, then check it against the explanation.

A company needs to integrate a legacy on premise application that can only support SOAP API. After the Integration Architect has evaluated the requirements and volume, they determined that the Fire and Forget integration pattern will be most appropriate for sending data from Salesforce to the external application and getting response back in a strongly typed format. Which integration capabilities should be used to integrate the two systems?

Answer options

Correct Answer:

Explanation

The scenario requires a "Fire and Forget" integration from Salesforce to a legacy system's SOAP API. Salesforce's Outbound Message is a declarative, native feature designed specifically for this purpose. It sends a SOAP notification to a designated endpoint asynchronously without waiting for a response, perfectly matching the fire-and-forget pattern. For the return communication from the legacy system to Salesforce, the requirement is for a "strongly typed format." The Enterprise WSDL is strongly typed, meaning it is bound to the specific configuration of the Salesforce org, including its custom objects and fields. This provides a strict contract for the external system, fulfilling the requirement.

References

1. Salesforce Architects Documentation

Integration Patterns and Practices: The "Fire-and-Forget" pattern description notes that declarative features like workflow-driven outbound messages are a primary implementation method from Salesforce. This supports using Outbound Message for the first leg of the integration. (See "Remote Process Invocation—Fire and Forget" pattern).

2. Salesforce SOAP API Developer Guide

"Introduction to WSDL": This guide explicitly differentiates the two WSDL types. It states

"The Enterprise WSDL is strongly typed... It is tied to a specific configuration of Salesforce." This directly supports the use of Enterprise WSDL for the "strongly typed format" requirement.

3. Salesforce SOAP API Developer Guide

"Introduction to WSDL": The guide contrasts the Enterprise WSDL with the Partner WSDL

stating

"The Partner WSDL is loosely typed... It is used for applications that work with data from multiple Salesforce organizations." This confirms why Partner WSDL is incorrect for this scenario.

4. Salesforce Help

"Set Up Outbound Messages": This documentation describes Outbound Messages as a type of action that "sends a secure

configurable API message (in XML format) to a designated listener." This confirms its role as a SOAP-based

fire-and-forget mechanism.

Question 6 of 25

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