Those who say unvalidated (never having been validated) is "not a word" are simply being prescriptive, outdated, and pedantic. It's been used increasingly over the past century (the chart represents a total of 34,000 instances in print).

I don't see any problem at all with the word, which is clearly distinguishable from invalidated (having been been checked but failed validation). If OP wishes to avoid unfounded allegations of illiteracy though, he might wish to consider unverified as a less contentious alternative.

Those who say unvalidated (never having been validated) is "not a word" are simply being prescriptive, outdated, and pedantic. It's been used increasingly over the past century (the chart represents a total of 34,000 instances in print).

I don't see any problem at all with the word, which is clearly distinguishable from invalidated (having been been checked and failed validation). If OP wishes to avoid unfounded allegations of illiteracy though, he might wish to consider unverified as a less contentious alternative.