Hard Disk SMART returning high values after being wiped

I bought some used 2TB hard drives that have been wiped, and upon receiving the drives, I've run a quick test on it with SMART reporting three warnings (the drives have identical warnings):

• Reallocated sector count raw value: between 17 million an 93 million


• Current pending sector raw value: 28,147,495 (same value across the drives)


• Offline Uncorrectable raw value: 28,147,495 (same value across the drives)

A proper business sold the drives with a description on the invoice of "Condition: 100% Health 100% Performance Tested with Hard Disk Sentinel 5.50 PRO".

Are these three errors significant? How can I force the firmware to clear these warnings if they are not legitimate(somehow induced through the wiping process)?