A multinational company requires that all phone numbers be standardized as country code + area code + phone number. The application design team decides that a custom PowerApps component framework (PCF

A multinational company requires that all phone numbers be standardized as country code + area code + phone number. The application design team decides that a custom PowerApps component framework (PCF) control should be used to prompt users for an area code and correctly format the phone number. You need to get the list of valid area codes when a contact record is opened and before the user enters a new phone number. In which function should you call webAPI.retrieveMultipleRecords?