Footage may be corrupted due to the following conditions.
When the main recording format is set to ProRes (either with CFast or using the Codex Capture Drive*1) and the output recording command is set to [On], a recording error may occur if the recording stops due to the “Media full” message. Then the “Some clips require data recovery” message appears. Even after performing recovery, a message saying “Unable to recover data” appears. The final clip cannot be recovered.
Please note that this will only affect the last recorded clip on the media. If the media doesn’t become full, this phenomenon will not occur.
*1In the case of using the separately sold CDX-36150 (CODEX Recorder for EOS C700)