Temperature rating approach

Hello everyone,
I’m currently working on a Python code to calculate temperature scores for companies based on their emissions across different scopes (Scope 1, Scope 2, and Scope 3)in order to calculate the overall temperature score of a bank. I’ve encountered a scenario where ,for a number of companies included in the bank’s potfolio ,setting a target for Scope 1 + Scope 2 emissions seems to affect the temperature score for that specific scope but not for Scope 1 + Scope 2 + Scope 3 emissions of that company individually. Shouldn’t the emission reduction target for Scope 1 + Scope 2 emissions have an impact on the overall temperature score of the company, including Scope 3 emissions? Is there a way to ensure that the emission reduction targets are properly accounted for in the temperature score calculation across all scopes?