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Note: You are currently viewing documentation for Moodle 3.3. Up-to-date documentation for the latest stable version of Moodle is probably available here: error/moodle/cannotmapfield.

Accompanied with the message "Mapping collision detected - two fields maps to the same grade item xxxxx". Frequently, this means that a csv file is being rejected as the header fields are not in a format that Moodle accepts, or the header row is mismatched.