This study aims to analyze various Indonesian language errors that appear in academic texts and student scientific papers in order to improve the quality of language use in scientific writing. The method used is descriptive qualitative research through literature review and document analysis. The research data comes from student scientific papers, which are analyzed based on aspects of spelling, morphology, syntax, and diction. The results indicate that the most frequently encountered errors include spelling errors, inappropriate use of affixes, ineffective or ambiguous sentence structures, and word choice that is inappropriate for the context of academic writing. Factors contributing to these errors include a lack of understanding of Indonesian language rules, limited vocabulary, the influence of mother tongue or regional languages, and minimal writing practice and editing processes. Therefore, increased language learning, reading and writing habits, and the provision of constructive feedback are needed to minimize language errors and increase the effectiveness of communication in students' scientific papers in an appropriate and sustainable manner.
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