To retrieve product details from a SOAP connector, which configuration is NOT valid?

Retrieving product details from a SOAP connector typically requires a structured and suitable environment to effectively handle the exchange of data. When examining the configurations:

Invoking the SOAP connector from a data page is valid because data pages are designed to fetch and manage data efficiently, providing a reusable and scalable means of accessing external data sources like SOAP services.

Invoking it from an activity is also valid, as activities are powerful tools within Pega that can be used to perform various actions, including making calls to external services. This approach allows for processing and transforming the returned data as needed.

Invoking it from a data transform is not a valid method because data transforms are primarily utilized for mapping data between two structures, transforming properties on a page, or initializing data. They do not have the capability to handle the complexities of calling external services like a SOAP connector directly.

Thus, the reason why invoking it directly from a flow is identified as not valid is that flows are meant to sequence processes and manage user interactions, rather than to directly make service calls. The appropriate mechanism for invoking a SOAP connector would involve using data pages or activities, which are specifically designed for such interactions.