Where should you create an error text for display in ABAP?

Creating an error text for display in ABAP is best accomplished in a message class. Message classes serve as a central repository for defining messages that can be reused across multiple programs or applications. They allow developers to maintain a set of messages that can be assigned unique identifiers, making it easy to manage and localize error texts as needed.

When an error occurs, the program can retrieve the corresponding message from the message class and display it to the user, ensuring consistent messaging throughout the application. This approach also facilitates easier updates, as changes can be made in one location without modifying the underlying code.

Text pools, while they can store texts, are typically more suited for longer texts that are not necessarily linked to specific application messages. Creating an error text in a global class might be viable for encapsulated functionalities, but it does not provide the same level of standardization and ease of management as a message class. Error logs are meant for recording errors rather than displaying user-friendly error messages, which further distinguishes the use and purpose from that of message classes.