In this chapter, we begin to wrap things up by re-visiting some of the various ways that things can go wrong with our scripts and other changes, and then looking at some of the ways we can go about mitigating those issues. We learn how to write code so that it logs helpful, informative messages at the appropriate level, and how to go about resolving any bugs or potential issues that this exposes. In the next and final chapter, we're going to learn even more about how to build robust, error-free code, from other ServiceNow seasoned professionals!