1.6 · Update Payment Mode

18.4a · When the S1SP changes Payment Mode (with its SMETS1 meaning) to Credit Mode, the SMETS1 ESME or SMETS1 GSME resets Meter Balance, Emergency Credit Balance, Emergency Credit Limit, Emergency Credit Threshold, Debt Recovery Rates [1 … 2] and Debt Recovery Per Payment (with their SMETS1 meanings).

18.4b · When the S1SP changes Payment Mode (with its SMETS1 meaning) to Prepayment, the SMETS1 ESME or GSME automatically activates Emergency Credit (with its SMETS1 meaning) if the Emergency Credit Limit (with its SMETS1 meaning) is greater than zero.

18.4c · When the S1SP changes Payment Mode (with its SMETS1 meaning) to Prepayment and no Emergency Credit Limit (with its SMETS1 meaning) has been set by way of a successful ‘Update Prepayment Configuration (SRV 2.1)’ more recently than the most recent Payment Mode (with its SMETS1 meaning) to change, an Emergency Credit Limit (with its SMETS1 meaning) of £5 shall apply on the Device.

18.4d · On a change of Payment Mode (with its SMETS1 meaning) the target SMETS1 ESME or SMETS1 GSME resets the Non-Disablement Calendar (with its SMETS1 meaning) to a factory default which is no Non-Disablement periods.

18.4e · Where the target SMETS1 ESME or SMETS1 GSME does not support positive values for the Disablement Threshold (with its SMETS1 meaning) and the DisablementThreshold value in the Service Request is positive (with their DUIS meanings), the S1SP shall create a SMETS1 Response indicating failure. For clarity, the S1SP shall undertake no further processing of the Service Request.

18.4f · Where the target SMETS1 ESME does not support the setting of the Disablement Threshold (with its SMETS1 meaning), the S1SP shall discard the value in DisablementThreshold when processing the Service Request. For clarity, the S1SP shall create a SMETS1 Response indicating success where all other processing succeeds and the SMETS1 ESME will continue to have the default Disablement Threshold (with its SMETS1 meaning) of zero.

18.4g · Where the target SMETS1 GSME does not support the setting of Suspend Debt Emergency (with its SMETS1 meaning) to be active and the value of SuspendDebtEmergency (with its DUIS meaning) is ‘true’ in the Service Request, the S1SP shall create a SMETS1 Response indicating failure. For clarity, the S1SP shall undertake no further processing of the Service Request.

18.4h · The S1SP shall read the Payment Mode (with its SMETS1 meaning) of the Device identified by the BusinessTargetID (with its DUIS meaning) and, where that is consistent with the PaymentMode (with its DUIS meaning), the S1SP shall create a SMETS1 Response indicating 'success', shall not send any instruction to the Device and shall ignore SuspendDebtEmergency, SuspendDebtDisabled and DisablementThreshold (with their DUIS meaning).

18.4i · Where the target SMETS1 GSME or SMETS1 ESME does not action the setting of Suspend Debt Disabled (with its SMETS1 meaning) to be active and the value of SuspendDebtDisabled (with its DUIS meaning) is ‘true’ in the Service Request, the S1SP shall configure the Device but the Device will continue with Time-based Debt Recovery.

18.4j · Where the target SMETS1 GSME or SMETS1 ESME does not collect Standing Charge when Suspend Debt Emergency (with its SMETS1 meaning) is active and the value of SuspendDebtEmergency (with its DUIS meaning) is ‘true’ in the Service Request, the S1SP shall configure the Device so that the Device does not collect Standing Charge.

18.4k · Where the SMETS1 ESME or the SMETS1 GSME supports the setting of DisablementThreshold (with its DUIS meaning) to a whole number of pence, the S1SP shall round up the value of DisablementThreshold (with its MMC meaning) to the nearest whole number of pence and instruct the device to apply the resulting value.

18.4l · When the S1SP changes Payment Mode (with its SMETS1 meaning) from Credit to Prepayment, the SMETS1 ESME or GSME will be configured with a NonDisablementCalendar (with its SMETS1 meaning) such that disablement of supply is suspended between 20:00 and 08:00 UTC on weekdays and all day on weekends.

18.4m · When the S1SP changes Payment Mode (with its SMETS1 meaning) from Credit to Prepayment, the SMETS1 ESME / GSME will reset the Meter Balance / PrepaymentMode Meter Balance (with its SMETS1 and DUIS meanings) respectively to zero.

18.4n · When the S1SP changes Payment Mode (with its SMETS1 meaning) from Credit to Prepayment, the SMETS1 ESME or GSME will be configured with an Emergency Credit Limit (with its SMETS1 meaning) of £10.

18.4o · When the S1SP changes Payment Mode (with its SMETS1 meaning) from Credit to Prepayment, the SMETS1 ESME or GSME will be configured with an Emergency Credit Threshold (with its SMETS1 meaning) of £1.

18.4p · When the S1SP changes Payment Mode (with its SMETS1 meaning) from Credit to Prepayment, the SMETS1 ESME or GSME will automatically activate Emergency Credit (with its SMETS1 meaning) if the Supply would have disabled due to insufficient credit.

18.4q · When the S1SP changes Payment Mode (with its SMETS1 meaning) from Credit to Prepayment, the SMETS1 ESME or GSME will be configured with a Maximum Meter Balance Threshold (with its SMETS2 meaning) of £1000.

18.4r · When the S1SP changes Payment Mode (with its SMETS1 meaning) from Credit to Prepayment, the SMETS1 ESME or GSME will be configured with a Maximum Credit Threshold (with its SMETS2 meaning) of £500.

18.4s · Where the target SMETS1 GSME or SMETS1 ESME does not suspend the collection of Time-based Debts (with its SMETS1 meaning) when SuspendDebtEmergency is set to true (with its DUIS meaning) then the Device shall, when Emergency Credit is activated (with its SMETS1 meaning) and SuspendDebtEmergency is set to true (with its DUIS meaning), collect any Time-based Debts from the Accumulated Debt Register (with their SMETS1 meanings).

18.4t · When setting Payment Mode to Prepayment Mode, regardless of whether the Device is currently in Credit Mode or Prepayment Mode, the target SMETS1 GSME: (i) sets the Emergency Credit Balance to twice the Emergency Credit Limit and activates Emergency Credit, regardless of whether Emergency Credit is currently activated, or any Emergency Credit has been used thereby clearing any Emergency Credit that has been used (with their SMETS1 meanings). For clarity, any successful activation of Emergency Credit resulting from an Activate Emergency Credit (with its SMETS1 meanings) will set the Emergency Credit Balance to the Emergency Credit Limit; and (ii) sets the Meter Balance, Payment Debt Register, Time Debt Registers [1 … 2] and the Accumulated Debt Register (with their SMETS1 meanings) to zero.

18.4u · Where the target SMETS1 GSME does not support positive values for the Disablement Threshold (with its SMETS1 meaning) and the DisablementThreshold value in the Service Request is positive (with their DUIS meanings), the S1SP shall create a SMETS1 Response indicating failure. For clarity, the S1SP shall undertake no further processing of the Service Request.

18.4v · When setting Payment Mode to Prepayment Mode, regardless of whether the Device is currently in Credit Mode or Prepayment Mode, the target SMETS1 ESME: (i) sets the Emergency Credit Limit to £5, or some other value that may have been set on the ESME prior to the ESME’s DateCommissioned (with its DUIS meaning), and sets the Emergency Credit Balance to twice that Emergency Credit Limit and activates Emergency Credit, regardless of whether Emergency Credit is currently activated, or any Emergency Credit has been used thereby clearing any Emergency Credit that has been used (with their SMETS1 meanings). For clarity, any successful activation of Emergency Credit resulting from an Activate Emergency Credit (with its SMETS1 meanings) will set the Emergency Credit Balance to the current Emergency Credit Limit; and (ii) sets the Meter Balance, Payment Debt Register, Time Debt Registers [1 … 2] and the Accumulated Debt Register (with their SMETS1 meanings) to zero.

18.4w · When the S1SP changes Payment Mode (with its SMETS1 meaning) from Credit Mode to Prepayment Mode, the SMETS1 ESME or SMETS1 GSME resets the Accumulated Debt Register (with their SMETS1 meanings).

18.4x · When the S1SP changes Payment Mode (with its SMETS1 meaning) from Prepayment Mode to Prepayment Mode, the SMETS1 ESME does not reset the Accumulated Debt Register, the Emergency Credit Balance or the Meter Balance (with their SMETS1 meanings).