§1. A member can also be dismissed for other causes provided that they are grave, external, imputable, and juridically proven such as: habitual neglect of the obligations of consecrated life; repeated violations of the sacred bonds; stubborn disobedience to the legitimate prescripts of superiors in a grave matter; grave scandal arising from the culpable behavior of the member; stubborn upholding or diffusion of doctrines condemned by the magisterium of the Church; public adherence to ideologies infected by materialism or atheism; the illegitimate absence mentioned in can. 665, §2, lasting six months; other causes of similar gravity which the proper law of the institute may determine.
§2. For the dismissal of a member in temporary vows, even causes of lesser gravity established in proper law are sufficient.
Source: Code of Canon Law (Vatican.va)