hi restore ipad

The error message suggests that you have insufficient available space on the PC/Mac Hard Disk - or associated data partition.

The restore process will download a copy of the your data - and/or fresh copy of the Operating System - to be restored to the device. Without adequate space to download and unpack the data, the restore process will fail.

If you have insufficient space on your computer hard disk, you’ll need to clear some space - but deleting or moving data elsewhere.

To repeat, the problem is not due to insufficient space on your iPad. The error that you see indicates that you have insufficient space on your Mac computer hard disk.