A question for the other members of this group that are involved in financial planning & analysis (FP&A) - to what extent do you question/understand the methodologies behind the data you use in your modeling? I'm thinking specifically of costing data, which for most companies is based on standard costing, although other costing methodologies (such as ABC) could be better for forecasting, analysis and internal decision support.
Is selection of costing methodology an issue that ever comes up? How does your current methodology affect the accuracy of your analysis? Or maybe it's not possible to tell?