# Change history
Every change made to a data record is saved in an audit-proof manner by zoolo.
Changes include the following actions:
- Create a data record
- Edit a data record
- Delete a data record
Changes are saved per data record and can be called up via individual data records.
# Call up change history
The change history of a data record can easily be called up within the detailed view using the small button at the top right:
A list of the last changes and comments will then open
Comments can be stored within the change history of each data record. Users can also be tagged in comments and informed about them by email.
# Write a comment
Comments can be written within the opened change history of a data record using the text field below:
# Tag users
Users can be selected and tagged within a comment by typing
As soon as the comment is saved, the respective user is informed by email about the link in a comment.