context: Bolshevik leaders had effectively reestablished a polity with roughly the same extent as that empire by 1921, however with an internationalist ideology: Lenin in particular asserted the right to limited self-determination for national minorities within the new territory. Beginning in 1923, the policy of "Indigenization" [korenizatsiia] was intended to support non-Russians develop their national cultures within a socialist framework. Never formally revoked, it stopped being implemented after 1932. After World War II, the Soviet Union installed socialist regimes modeled on those it had installed in 1919–20 in the old Tsarist Empire in areas its forces occupied in Eastern Europe. The Soviet Union and the People’s Republic of China supported post–World War II communist movements in foreign nations and colonies to advance their own interests, but were not always successful.
question: When was the policy of indigenization revoked?