**6. Conclusions and recommendations**

Sustainable innovation is gaining popularity in business, society, and academia. Few empirical and review research explore leadership's role in innovation performance. This study included 80 studies from a systematic literature review to examine the role of leadership in innovation. The study found that having a leader improves an organization's reputation, planning, structure, monitoring, and innovation performance. This paper reviews the available literature on effective leadership to enhance innovation. It shows the role of leaders in promoting practical innovation to the extent desired by stakeholders and confirms innovation's importance to organizational success. The results demonstrated that leadership is vital, especially when the market and environmental pressures are involved. The findings may help regulators and practitioners comprehend the leadership and innovation link of the le field and allow for new and exceptional empirical studies. Current innovation procedures must be altered to improve the professionalism of this technology through training and funding. Due to different aspects/research subjects of sustainability assurance, auditors should define the criteria employed and refer to established standards to strengthen the credibility of their verification and the readability of subordinates toward new idea generation. Subordinates should be involved in revising innovation to improve its quality and standard. This study has limitations, like others. We used keywords to discover sample material in Scopus, a peer-reviewed abstract indexing database. Future studies may use the Web of Science, ABS, and ABDC. The search method utilized in this study was limited, thus the findings may not include all relevant documents. Future research could add sustainable development or disclosure to the search query.

The current study had limitations despite its contributions. First, while our cross-sectional research approach sheds insight into the linkages between our study's main variables and changes, we did not analyze causal relationships across time. Wipulanusat et al. [118] study solely Anglo-Saxon Australia. This restricts the generalizability of findings across cultures. Future studies should focus on cross-cultural features and mixed methodological.
