Prior period adjustments (PPA)

A Prior Period Adjustment (PPA) is an adjustment to meter readings that is made after the readings have been closed (the billing for a meter has been approved and submitted).

Depending on the configuration of your system, you may need to manually review and approve PPAs before the adjustments can be committed.

You can process PPAs through the Prior Period Adjustment window. This window displays the following for each affected meter:

• Original and revised volume and energy readings.

• Start and end dates for the current period in which the adjustments were made, as well as for the affected prior period.

• When, and by whom, the adjustment was made, and the reason for the adjustment.

• The Allocation Month that the PPA is applied to.

  If the Accounting Close is enabled (that is, if CD_ACCOUNTING_CLOSE = Y, this is set during installation), the Allocation Month information is hidden. For more information, refer to Accounting close.

  PPAs must be traceable to the date of the original readings (effective date) and the date that the changes were made.

  Notes: The scope of the PPA application does not include performing billing and accounting functions. The PPA application acts as an interface between the Measurement system and an external billing and accounting system. To be considered as a PPA, a change must apply to a reading from a prior (closed) booking period. Changes can be the result of your edits, system calculations, or new data. For manual meters only, you can directly edit the volume, energy, and heating value. For other types of meters, you can often edit related values, causing the system to perform recalculations that affect the volume and energy or specific gravity and heating value.
  All accepted PPA information is stored in the Audit History for the meter, in the Meter Data Editor window.
  It is possible to filter the information on the Prior Period Adjustment windows. For more information, refer to Filters.