Many carriers require things like:

50 characters or less for SKU descriptions
min 6 characters for HS code
30 characters for Company Name
and so on

it would be great to have this be a data validation feature - both when uploading CSV of SKUs and when adding a SKU manually.

Additionally, it would be great to be able to fix these errors from within the csv upload step in some sort of "staging" environment as opposed to getting some janky CSV output that says which ones werent added and why.