This research aims to understand how to optimize the impact of misunderstandings. The study uses the literature review method by investigating 12 journal articles published between 2017 and 2024. The study aims to analyze the forms of misunderstandings in regional languages, as well as differences in public opinion in regional language, and the impact of their differences so as to find ways to optimize the misunderstanding of local languages. The results of this study showed some forms of misunderstanding in the use of regional languages, such as pronunciation, logarithm, and interregional tone of speech. In research, it was found that character differences in speech, such as a loud and fast tone, can increase the likelihood of misunderstanding when two people from different areas speak.

With this service, students of SMP 4 Muhammadiyah Pekanbaru are educated about anti- corruption literacy. Corruption is an act carried out to gain profit in a bad way, such as bribing, extortion, gratification, and others. The implementation plan is carried out in three stages. In the preparation stage, SMP 4 Muhammadiyah Pekanbaru carries out licensing, coordination, and socialization. The second stage is implementation, which includes socialization and counseling. The third stage is evaluation and preparation of reports. The results of the service show that students of SMP 4 Muhammadiyah Pekanbaru have the ability to avoid corruption after learning about anti-corruption.