When accessing or modifying customer records in an external system, where should the connector be invoked from?

Invoking the connector from an activity is correct because activities in Pega are designed to execute a series of steps that can include invoking connectors to interact with external systems. Activities provide a flexible and robust environment for accessing and modifying data, which is ideal for integrating external systems.

In an activity, you can use methods like Obj-Open, Activity, or the specific connector method to retrieve or update records in an external system. This allows for complex logic and control flows, including error handling and branching, making activities a suitable choice for these interactions.

Using data pages would be incorrect because while they can interact with data sources, they primarily handle data retrieval and storage through a defined structure rather than managing updates or complex logic. Flow actions are primarily intended for user interface interactions and guiding users through tasks rather than executing integrations. Integrator shapes are designed for direct integration but are typically utilized within the context of a choreographed process flow, limiting their flexibility compared to activities.