The Hidden Risk in ERP Automation: How One Bad Sentence Can Cost Your Company Millions

AI-based ERP systems often misclassify expenses not due to lack of data, but because they follow grammar too closely. Complex syntax, including nominalizations and clause stacking, introduces structural bias. This study proposes the fair-syntax transformation, a rewriting method that simplifies narratives into a Subject-Verb-Object structure. The result is a 15 percent reduction in misclassification and improved audit reliability. Syntax, rather than meaning, is the overlooked driver of error in accounting automation.