In a 2.1 Workflow Action Script's onAction function, I'm encountering error

salesOrder.setSublistValue is not a function [at Object.onAction

. So far, the same bundle + script + action succeeds in two 2023.1 accounts. The error throws in a 2023.2 account (specifically: 2023.2.12.30288). Wondering if anyone else has come across any other odd issues with SS2.1 + v2023.2. Snippet in thread if anyone's interested in reproducing.