There may not be a sufficient amount of free space on the HDD (for the image controller).
Click Device Information - Option.
supplementary explanationFor details, refer to Information Tab.
In HDD (Pre-RIP/Form/Scan Data) - Remain, check the amount of available space.
Delete unnecessary data.
supplementary explanationFor details, refer to Auto Delete Document.
Reduce the data resolution.
supplementary explanationNote that the image quality is reduced.
For details, refer to Scan Settings.
Reduce the number of pages.
supplementary explanationDivide the original into some blocks.
supplementary explanationRemove unnecessary pages.
You may be attempting to send data to an unregistered User Box.
Create a box before registration.
Register a User Box.
supplementary explanationFor details, refer to Registering an HDD User Box as a Destination.