Emission reduction target instead of PC/TR for sectors without SDA

Hi,

Currently in the process of setting SBT for a bank.

Part of our balance consists of equity investments in ‘all other sectors (listed companies)’. This is a required subclass. A broad range of sectors is covered, for which no SDA is available.
We do however have access to scope 1, 2 and 3 emissions of those companies. We have calculated the attributed emissions following PCAFs approach.
What are our options to set a target? We would prefer not to set a TR or PC target. Can we set similar reduction targets as for regular scope 3?
E.g. -25% in absolute emissions by 2030 or -52% in economic intensity emissions by 2030?