This article is within the scope of WikiProject Africa, a collaborative effort to improve the coverage of Africa on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.AfricaWikipedia:WikiProject AfricaTemplate:WikiProject AfricaAfrica articles
This article is within the scope of WikiProject Ethnic groups, a collaborative effort to improve the coverage of articles relating to ethnic groups, nationalities, and other cultural identities on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Ethnic groupsWikipedia:WikiProject Ethnic groupsTemplate:WikiProject Ethnic groupsEthnic groups articles
There is no group that is called Tshi in Ghana. The only source is back to 1911, over 100 years ago.
My guess is that Tshi was confused with the language Twi (the most common spoken language in Ghana).
The ethnic group that speak Twi are the Akan people and not a group called "Tshi".