50 Cent: My African Mansion Was Also BS

50 Cent is showing no shame in the money game ... now admitting he never had the keys to that house in Africa after all.

The rap star filed legal docs in his bankruptcy case, saying, "I do not, nor have I ever owned, any real property in Africa." He included a picture of his Instagram post last year touting the mansion he claimed to have owned.

50's trying to prove to creditors he's not hiding assets ... claiming he only makes it appear his lifestyle is super lavish in order to "move the needle" for fans who idolize that "50 Cent" persona.