At times, Box customers may look to use the Box API to update a number of files with the same metadata. For example, if you upload a very large number of files that share a common characteristic, such as photographs taken of the same event, you can use the API to add metadata to the photos marking this event.
To learn about using the Box API to add metadata to multiple files at once, please explore our Developer Documentation about Creating Metadata. Using this API functionality, you can write a simple script to update the required files with the desired metadata values.
If you run into issues with this process, please contact Box User Services with any questions.
Alternatively, if you're working in an enterprise Box account and don't want to use the API, you can use the cascading metadata templates feature if your enterprise admin has enabled it.