Validation is a process which tries to prevent common renaming problems by analyzing the list of files and target destinations. A warning message is given when possible problems are discovered. Users should generally eliminate all warnings prior to renaming, otherwise items may fail to rename.
Here is a list of reasons for a warning during validation process:
- There are duplicated destination paths
- New path contains forbidden characters
- New path is already taken by an existing file
- New path exceeds maximum length
By default, automatic validation is enabled during the preview process. This behavior can be changed from within the settings.
Note: Validation may require significant amount of time when processing large amount of files.