Explanation
The customer needs to create a single measuring component type to store the 15-minute interval readings along with the daily scalar register reading. A measuring component type defines the type of measurement that a device can record, such as scalar, interval, or event. A measuring component type can store multiple measurement types, such as interval and scalar, for different purposes, such as billing, load research, and presentment1.
The customer does not need to create separate measuring component types for each measurement type or each use case purpose. This would result in unnecessary duplication of data and complexity of configuration1.

Explanation
Usage calculation groups are used to define how usage data are calculated, validated, and exported for different purposes, such as billing, settlement, or analysis. Usage calculation groups can have different components that specify the logic and parameters for performing various operations on usage data. According to the Oracle Utilities Meter Data Management Business User Guide, some examples of components that can be configured in usage calculation groups are:
* CIS rates: These are rate schedules that are defined in the customer information system (CIS) and imported into Oracle Utilities Meter Data Management. CIS rates can be used to specify which bill determinants or usage calculations should be applied for different rate schedules or customer classes.
* Bill determinants or usage validations: These are rules that check the quality or accuracy of usage data and assign condition codes or flags to indicate any issues or errors. Bill determinants or usage validations can be used to ensurethat usage data meet certain criteria or standards before they are exported to CIS or other systems.
* Bill determinants or usage calculations: These are rules that perform various calculations or adjustments on usage data, such as dividing usage into time-of-use periods, applying factors or multipliers, or deriving net usage. Bill determinants or usage calculations can be used to generate different types of bill determinants for billing purposes.
References: Oracle Utilities Meter Data Management Business User Guide, Chapter 8: Usage, Section 8.2:
Usage Calculation Groups

Explanation
An activity type is an Oracle Utilities Application Framework (OUAF) admin data that should be created for a custom Service Order Management process. An activity type defines the type of work that needs to be performed on a service point or device, such as enable service or disable service. An activity type also defines the following attributes:
* The status and priority of the activity
* The business object and algorithm that are used to process the activity
* The fields and validations that are required for the activity
* The notifications and escalations that are triggered by the activity
* The dependencies and relationships that exist between different activities An activity type is used to create and manage service orders, which are records that store the details and outcomes of the work performed on a service point or device.

Explanation
To allow an implementation to send bill determinants to CIS based on the requirements, you should set up the following usage subscription or usage calculation group configuration options:
* Scalar usage calculation rule with a valid usage group: This defines how scalar consumption values are calculated from measurements and sent to CIS. You can define scalar usage calculation rules for different measurement types and associate them with usage groups. A usage group is a collection of usage calculation rules that are applied to measurements based on certain criteria3.
* TOU usage rule with a valid usage group: This defines how TOU consumption values are calculated from measurements and sent to CIS based on specific TOU periods. You can define TOU usage rules for different measurement types and associate them with usage groups. A usage group is a collection of usage calculation rules that are applied to measurements based on certain criteria3.
You do not need to set up scalar specific group as a fallback VEE group or TOU usage group as a fallback VEE group. A fallback VEE group is used when there is no matching VEE group for a measurement based on its characteristics. A VEE group is a collection of VEE rules that are applied to measurements to validate, estimate, and edit them

Explanation
To calculate the power factor for a bill, you can use the Vector and Quantity Math rule to derive the power factor from the kWh and kVArh channels. The Vector and Quantity Math rule is a usage calculation rule that facilitates the configuration of complex vector calculations. It is based on a series of underlying services with vectors configured as input to the calculations. The power factor is a ratio of real power (kWh) to apparent power (kVAh) that indicates how efficiently a device uses electricity. The power factor can be derived from the kWh and kVArh channels by using a mathematical formula.
You do not need to use a virtual meter to perform the calculations, which is a configuration that defines how measurements from multiple devices or service points are aggregated or disaggregated. A virtual meter is not used to calculate derived values from measurements, but to create new measurements from existing ones.
You do not need to use a measuring component derivation algorithm to calculate the power factor, which is a custom logic that can be developed by using Groovy scripting language or Java programming language. A measuring component derivation algorithm is not used to calculate derived values from measurements, but to create new measuring components from existing ones.
It is not true that power factor can only come from the meter and cannot be calculated. Power factor can be calculated from other measurement channels, such as kWh and kVArh, by using usage calculation rules.