Hello Tammy,
There is information about this feature in SAP note:
1909014 BSI TaxFactory 10.0 - Phase II
Employee Type Indicator and Date of Death
This Note delivers feature 10EET. You can use this feature to match the action when employee is terminated because he or she passed way with the employee type indicator released by BSI.
If you apply this solution via HRSP, further documentation can be found in Customizing for Payroll USA under Tax -> SAP/BSI Interface -> Determine employee type indicator. If you apply this solution via correction instructions located in the Assigned Correction Instructions section, refer to the file BSI_TF_10_Customizing190914.pdf attached to this note, in chapter 3 - Determine employee type indicator.
Hope this helps.
Graziela