Which function allows Qlik to change field names and values until a new force statement is issued?

The Force function is used in Qlik to maintain flexibility when dealing with field names and values. When this function is implemented, it allows the user to change the names of fields and their associated values dynamically during the script execution. This capability is particularly useful in data loading and transformation processes where adjustments are needed to align with the required data model or for simplifying the analysis.

This function ensures that changes are seamlessly made until a new Force statement is encountered, thereby allowing for ongoing modifications without interrupting the flow of data processing. It provides the ability to implement data transformations iteratively, giving data architects a powerful tool to refine their data sets effectively as they work through the loading scripts.

Other functions listed, like Previous, Subroutine, and Trace, serve different purposes and do not provide the same functionality of changing and maintaining field names or values in the manner emphasized by the Force function.