Your customer wants to change the way Priority on Problem records is calculated based on Impact and Urgency. Which module should you use to locate and update the Priority Problem Lookup record?

The correct choice is to use the Data Lookup Definitions module to locate and update the Priority Problem Lookup record. This module is specifically designed for managing the relationships and rules used in lookups across various records, including how priority is set based on impact and urgency.

Within the context of IT Service Management, Data Lookup Definitions allows users to define how certain fields should be calculated or derived based on other attributes, such as how the Priority of a Problem record is determined by the combinations of Impact and Urgency. By updating the Priority Problem Lookup record through this module, you can ensure that your customer's requirements for priority calculation are correctly implemented.

In contrast, Priority Matrix typically deals with the visual representation of priorities rather than the underlying data definitions. Choice Lists are often used for defining specific sets of selectable values but do not directly manage calculations. Priority Rule Definitions may apply to certain conditions or environments for prioritization but do not hold the actual mapping from combinations of Impact and Urgency to Priority values.