The in-house investigation was launched in response to revelations last week by French investigative website Mediapart that club talent scouts operated a system of racial profiling for years.
The French champions released the findings of their probe after talks with French Sports Minister Roxana Maracineanu.
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Mediapart, citing the latest series of Football Leaks documents, said that between 2013 and this year, PSG's scouting department filled in recruitment forms on potential youth signings that included a section on ethnicity.
The section offered four options: French, West Indian, North African, African.
Documenting information on racial or ethnic origins is illegal in France.
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Thursday's statement from PSG said the investigation "confirmed the introduction of forms with a section on ethnicity between 2013-2017.
"These forms were the personal initiative of the head of the Province (scouting) department."
The statement concluded: "Despite their existence, there was no process of discrimination at the level of scouting, evaluating or recruiting of young players."
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