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Flex has 3 types of reports: Global, Definition, and Instance. For a detailed explanation of these, please see our Help Center article, Global, Definition, and Instance Level Reports. What's the difference? Currently, the Flex5 API only supports Instance Level reports. The default file type is PDF, however, with the addition of the REPORT_FORMAT parameter and appropriate value, you can get other types. As of this writing, the only tested values are pdf and csv.
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