Unable to see 'LCM Variance Account' and 'Charge Variance Account' in SLA

Hi Experts,

We are trying to modify our SLA. We want to update the 'Product Code Segment' which we have segregated based on items. So we have defined an DFF at organization item level for all items and populated it with Product Code segment value. After that we are going to define the custom source.

We want to perform these changes in SLA for only above mentioned accounts. But the issue we are facing here is we are unable to find those in SLA.

Could you please help us understand why this is so ?

Thanks in Advance...

Regards

AB