Message

Affected Period

Status
Closed

Category
Settlements

Run type
N/A

Created
21/12/2022 11:44

Last Updated
11/01/2023 16:29

Updated message 11/01/2023; 

Dear Market Participant,  

The root cause of this issue remains under investigation with our vendor with a further update to be provided as more information becomes available.

SEMO Settlements can confirm that it was specifically all DSUs which were impacted by this issue. You can identify if you were impacted by this issue if you were expecting to receive a start-up (CSU) payment as per F.11.2 of the TSC and did not receive the payment.

As per the previous market message update, a workaround was implemented on Jan 4^th (applicable from December 29^th initial settlement data onwards) for this issue to prevent it causing any further incorrect settlement calculations. This is a temporary solution while our vendor investigates the issue and develops a permanent solution.

An Ad hoc resettlement of the impacted billing periods will be processed over the coming weeks with a target date of Jan 20^th for inclusion with Settlement Documents.

A separate Ad hoc resettlement market message will be issued on this once the Ad hoc resettlement is confirmed in the Settlement calendar.

Kind regards,

SEMO Settlements

_____________________________

Updated message 04/01/2023; 

Dear Market Participant,  

The vendor has been working on an enduring resolution to this issue over the holiday period. SEMO Settlements have also successfully tested an interim workaround which will be used effective from today. 

SEMO Settlements are currently analysing the resettlement required and will provide further updates on this later in the week.

Kind regards, 

SEMO Team 

____________________________

Updated message 23/12/2022;

Dear Market Participant,  

The issue has been raised to our vendor as a high priority for investigation. 

We will provide a further update when available on the resolution of this issue and any required resettlement.

Kind regards, 

SEMO Team 

______________________

Original message 21/12/2022; 

Dear Market Participant,

SEMO Settlements have identified a settlements issue which is impacting the CSU determinant (Start-up costs) within CFC resulting in the incorrect calculation of these costs under specific scenarios.

Analysis is continuing on this issue between SEMO and our systems support team, with a further update to be provided as more detail is known on the resolution of this issue and any required resettlement which needs to be processed.

Kind regards,

SEMO Settlements