@Rani the way i’ve done it in the past is to use a UE (before load) to add a new ‘print’ button to the existing transaction. the suitelet is the target of the button and contains the ‘logic’ to pick the right printing template, and use the

N/render

module to print the transaction. another option is a client script that actually changes the transaction form used when the subsidiary changes, but that can be a hassle depending on the complexity of your account. (the client script option also means you have a bunch of extra mostly useless transaction forms setup.)