In which setting can you establish item types?

Establishing item types is specifically handled within the CRS040 Item Type. Open setting. This module is designed to allow users to define different types of items that the organization uses, categorizing them based on characteristics that are crucial for inventory management, purchasing, and other operational tasks. This is fundamental for setting up how items are treated throughout the system, including their pricing, categorization, and how they interact with other modules within Infor M3.

In this context, the other options do not serve the same purpose. CRS050 Item Configuration focuses on defining the configuration parameters for items, which is more about detailing specifications rather than categorizing item types. CRS030 Item Settings deals with overall settings related to items but does not specifically establish item types. CRS020 Item Definitions allows for creating and managing item definitions; however, this pertains more to the specific attributes of items rather than the overarching type classification. Establishing item types is a crucial foundational step in the overall item management process, and this is why the CRS040 Item Type. Open is the correct choice.