Common Data Format (CDF) data structures are created by the RapidLEI system and uploaded to the Global LEI System on a regular basis (Usually 10 times per day at regular 144 minute intervals). As we have a joint obligation to keep records accurate we may need to amend the XML data with a change which is not visible in the RapidLEI user interface. If we do change something that improves record data quality we’ll inform you by email. If it’s not something you would have seen from the user interface we’ll class this as an Internal change.