Six Sigma has been one of the most popular initiatives to improve management processes over the past few decades. Amidst the success stories on the Six Sigma, there exist some literature studies on the criticisms of Six Sigma. The purpose of this paper is to analyze the existing literature on the criticisms of Six Sigma through a systematic literature review. The criticisms need to be analyzed so that there is growth in the knowledge and understanding of Six Sigma. This paper analyzes literature through various electronic databases such as Academic Source Premier (EBSCO), Google Scholar, Business Source Premier (EBSCO), Emerald Insight, IEEE Xplore Digital Library, JSTOR, ProQuest, Science Direct, Taylor & Francis, PubMed, Wiley, Inderscience, Scopus, and World Public Library. Sixty-one relevant articles are found and analyzed in depth. This paper finds 12 major themes of criticisms on Six Sigma. Based on the findings, 16 research directions are offered. Amidst the plethora of literature review on the success of Six Sigma, this is the first comprehensive systematic literature review on the criticisms of Six Sigma. The authors firmly believe that such criticisms will help the academicians as well as the practitioners to understand some of the rudimentary gaps in implementing Six Sigma as a business improvement strategy.

中文翻译：

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六西格码的主要批评：系统文献综述

在过去的几十年里，六西格码一直是改进管理流程的最受欢迎的举措之一。在六西格码的成功案例中，也有一些关于六西格码批评的文献研究。本文的目的是通过系统的文献综述来分析现有关于六西格码批评的文献。需要对批评进行分析，以便对六西格码的知识和理解有所增长。本文通过各种电子数据库对文献进行分析，例如 Academic Source Premier (EBSCO)、Google Scholar、Business Source Premier (EBSCO)、Emerald Insight、IEEE Xplore Digital Library、JSTOR、ProQuest、Science Direct、Taylor & Francis、PubMed、Wiley、 Inderscience、Scopus 和世界公共图书馆。找到并深入分析了61篇相关文章。本文找出了对六西格码的 12 个主要批评主题。根据研究结果，提供了 16 个研究方向。在众多关于六西格码成功的文献综述中，这是对六西格码批评的第一次全面系统的文献综述。作者坚信，此类批评将有助于院士和从业人员了解在实施六西格码作为业务改进策略方面的一些基本差距。