The GPF shall store the data contained in the Publish Top Up Log command in the GPF copy of the GSME Billing data Log.
If there has been a communications outage, the GPF shall use the Get Top Up Log command to retrieve all prepayment top-ups that may have been processed during the communications outage. The GSME shall set the Date / Time field of the Get Top Up Log command to the current UTC time.
Upon completion of processing of a valid prepayment top-up where the GSME has made a debt payment using part of that top-up, the GSME shall push details of that debt payment only to the GPF using the Publish Debt Log command.
The GPF shall record the details provided in the GPF copy of the GSME Billing Data Log.
In cases of communications outages, the GPF shall request any outstanding payment-based debt payments by use of the GetDebtRepaymentLog command (and GetDebtRepaymentLog notification flag) with the Debt Type field set to 0x02 (Debt 3).