Portfolio Coverage and short loan durations

Hello fellow SBTi enthusiasts!

I’m currently involved in creating a target submission for a financial institution. Typically, this institution doesn’t have a high number of repeat customers due to its specific client focus.

If we establish an SBT (Science-Based Target) for our corporate loans, let’s say aiming for 33% of them to commit to SBTi within the next five years. We will initiate engagement with our clients, but it’s possible that our portfolio will change over time, leading to some clients who adopted SBTi targets no longer being associated with us after five years. Is there a way to still include these clients in our target, even if they are no longer part of our portfolio after five years?

Thanks in advance,