Apply consistent UType field descriptions

[nils-work]

As noted in the MI20 Holistic issue, all UType field descriptions could follow a standardised format for consistency and improved interpretation.

Apply the change noted in the MI20 holistic feedback issue:

The "Reference to the applicable [type] structure." convention could be applied to all ...UType field descriptions for consistency and clarity of interpretation.

The following sample shows the current variation across schemas:

• The type of recurrence used to define the schedule.
• The type of structure to present account specific fields.
• Indicator of the type of transaction object present in this record
• The type of address object present
• The type of object present in this response (from EnergyPaymentSchedule)
• Type of object included that describes the payee in detail.
• The type of customer object that is present
• Type of account object included.

This style was applied to the field noted here.

[nils-work]

Expected changes would be:

specificAccountUType
- The type of structure to present account specific fields.
+ Reference to the applicable account structure.

extensionUType
- Optional extended data specific to transactions. Currently extended data is supported for NPP service overlays.
+ Reference to the applicable transaction extension structure.

payeeUType
- Type of object included that describes the payee in detail.
+ Reference to the applicable payee structure.

payeeAccountUType
- Type of account object included.
+ Reference to the applicable payee account structure.

toUType
- The type of object provided that specifies the destination of the funds for the payment.
+ Reference to the applicable payment destination structure.

recurrenceUType
- The type of recurrence used to define the schedule.
+ Reference to the applicable recurrence structure.

addressUType
- The type of address object present.
+ Reference to the applicable address structure.

rateBlockUType
- Specifies the type of controlloed load rate.
+ Reference to the applicable controlled load rate structure.

methodUType
- The method of calculation of the discount.
+ Reference to the applicable discount method structure.

rateBlockUType
- Specifies the type of rate applicable to this tariff period.
+ Reference to the applicable tariff rate structure.

readUType
- Specify the type of the meter read data.
+ Reference to the applicable meter read structure.

paymentScheduleUType
- The type of object present in this response.
+ Reference to the applicable payment structure.

transactionUType
- Indicator of the type of transaction object present in this record.
+ Reference to the applicable transaction type structure.

addressUType
- The type of address object present.
+ Reference to the applicable address structure.

customerUType
- The type of customer object that is present.
+ Reference to the applicable customer structure.