What information can be looked up using the MBA9 function in AS400?

Using the MBA9 function in AS400 allows for the lookup of membership numbers and specific information related to those memberships. This function is particularly important in the context of Costco's operations, as it directly pertains to the management of customer accounts and memberships. The ability to access and verify membership information helps staff assist customers effectively, ensuring that they can provide support regarding account details, membership status, and benefits related to their membership.

The focus on membership data through the MBA9 function reflects the importance of maintaining accurate and comprehensive records of members, which is crucial for customer service, personalized marketing, and overall operational efficiency in retail situations like those at Costco. This aspect highlights how member-specific data is foundational in managing customer relationships and engagements.