Which of the following is not an Entity Action of the Customer Entity?

The choice of "RetrieveCustomer" as not being an Entity Action of the Customer Entity is correct because, in the context of OutSystems applications, the standard entity actions typically include operations that modify data or manage records, such as creating, updating, or deleting an entry.

In OutSystems, the common entity actions associated with a typical entity are Create, Read (which usually refers to retrieving data, but is often implemented differently), Update, and Delete. However, "RetrieveCustomer" is not typically labeled as a direct Entity Action. Instead, data retrieval is often handled through different mechanisms, such as queries or aggregates, rather than as a singular entity action.

Creating, updating, and deleting are explicit actions that show interaction with the data layer, whereas retrieval is considered a different kind of operation that doesn't fit neatly into the same action classification. This highlights the understanding of how entity actions are streamlined for CRUD operations but does not directly assign the term "retrieve" to an action.