In the basic configuration of a space you can define the maximum Athento file size allowed to store files in that space.
To configure this limit, go to the Space administration and open the "Information" tab.
In that section you will find the "Max File Size" parameter (maximum file size). Double-click on the current value to edit it and enter the value in bytes corresponding to the maximum file size you want to allow.
Keep in mind that the maximum value you can set per space is also limited at the server level to approximately 140 MB. This limit is controlled by the DATA_UPLOAD_MAX_MEMORY_SIZE property. If you need to increase it, write to soporte@athento.com.