What must a consultant enable and deploy before using Advanced Mapping in NPSP?

To utilize Advanced Mapping in NPSP, it is essential to enable and deploy My Domain. My Domain is required because it allows organizations to configure their Salesforce environment to utilize specific features, especially those related to the Lightning Experience and custom development.

Advanced Mapping leverages this setup to ensure that features and capabilities align correctly with your organization's Salesforce configuration. My Domain provides a unique namespace that enhances the security and customization of your Salesforce instance, particularly when dealing with complex data management tasks like mapping between different objects.

In contrast, while Delegated Administration and Customizable Rollups play roles in managing user permissions and data aggregation respectively, they do not directly influence the capability to implement Advanced Mapping. Custom triggers, though beneficial for automating processes, are also not prerequisites for Advanced Mapping.