According to the SAP Service Cloud Version 2 learning resources, to enable service agents to access and perform actions in an external solution, such as SAP S/4HANA Service, from a specific case type, the administrator has to do the following steps:
* Create a mashup to embed the web page of the external solution. A mashup is a way to integrate data or functionality from another web application into SAP Service Cloud Version 2. The mashup can be configured to pass input parameters from the case to the external solution, such as the case ID, the account ID, or the product ID.
* Use the web page URL of the external solution for extracting input parameters in the mashup. The web page URL of the external solution is the source of the mashup, and it can be used to define the input parameters that the mashup will send to the external solution. For example, if the web page URL of the external solution is https://s4hana-service.com/create-order?caseId={caseId}&accountId={accountId}, then the mashup can use the placeholders {caseId} and {accountId} to extract the values from the case and pass them to the external solution.
* Include a dedicated step pointing to the mashup in one of the phases of the case type. A case type is a template that defines the phases and steps that a case goes through from creation to closure. A step is a specific action that a service agent can perform on a case, such as sending an email, creating a task, or launching a mashup. By including a dedicated step pointing to the mashup in one of the phases of the case type, the administrator can enable the service agents to access the external solution from the case screen.
The other options are not correct because:
* Developing a custom business object is not necessary to access an external solution from a case type. A custom business object is a way to extend the data model of SAP Service Cloud Version 2 by creating new entities and fields that are not available in the standard solution.
* Defining a custom screen for the mashup is not required to access an external solution from a case type.
A custom screen is a way to create a new user interface for a custom business object or a standard business object that has been extended with custom fields. A mashup does not need a custom screen, as it uses the web page of the external solution as its user interface. References = Integrating SAP Customer Service, Service Operations and Field Service, Solution Guide for SAP Service Cloud Version 2