TOKYO -- The Nikkei Indonesia Manufacturing Purchasing Managers' Index, or PMI, fell slightly to 50.4 in September from 50.7 in August.
A reading above 50 indicates economic expansion, while a reading below 50 points toward contraction.
"Output fell fractionally due to raw material shortages," said Aashna Dodhia, economist at IHS Markit, which compiles the survey.
"Meanwhile, concerns regarding future business prospects echoed a note of caution, with confidence dipping to the lowest level since December 2012," the economist added.
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