What does the table MSG_EXTL_IN store?

The table MSG_EXTL_IN is designed to store formatted messages that are intended for internal use within the system. This means that the messages have been processed and structured to meet specific internal requirements or formats, allowing them to be efficiently utilized by the applications or processes that operate within the company's infrastructure. These formatted messages can include various types of data that have been organized and prepared for further processing, analysis, or action according to the internal protocols and workflows.

In the context of message handling, distinguishing between internal and external use is crucial. Internal messages often contain information that the system needs to operate correctly or communicate with other internal modules, which is why they are stored in a dedicated table like MSG_EXTL_IN. This structure helps maintain clarity and efficiency in message management within the system.

The other options pertain to different types of messages or responses. For instance, raw unprocessed messages would not be formatted and would therefore offer less utility for internal processing without additional handling. Acknowledgment responses would be specific feedback from an external network, which again diverges from the primary purpose of the MSG_EXTL_IN table, emphasizing its focus on internal formatted messages.