The phrase "created previously" is correct and usable in written English.
You can use it to refer to something that was made or established in the past. For example, "This policy was created previously, so no modifications can be made at this time."
The disaster created previously undreamed-of chances to strengthen sales, attract investors and partners, and achieve recognition for products and services that no amount of advertising could buy.
Legal highs have become a new moral panic in the same vein as those created previously for cannabis, cocaine – and most recently mephedrone.
The communications revolution immeasurably enhanced human opportunities for enlightenment and pleasure on one hand and created previously undreamed-of possibilities for manipulation and control on the other.
The 19 mega-marine protected areas created or announced in the last six years would comprise an area larger than all the protected ocean areas created previously.
This atom, in its turn, seemed to decay into an atom of element 114 (which had been created previously, but never in this fashion).
But the formidable designer for Comme des Garçons was far ahead of the curve — or, more correctly, ahead of the rigorous geometry that she had created previously.
To believe that auto expressionists will run out of gas at some point is to underestimate their ability to create previously unimaginable novelty.
This phenomenon creates previously unachievable storage and processing capacity that exponentially reduces the difficulty of simulating certain processes.
Moreover, technological innovation, social or political change, or other developments may create previously unknown circumstances for which there are no existing rules of accepted exchange, causing social strain.
The DACS Network was constructed using the same iterative process used to create previously published network models.
Then Mubarak fell, and a space was created for previously unheard voices.
