This is the 15488th most frequent Korean word.
변경되거나
"Changed or altered."
Here, '변경되거나' indicates a possibility that the settings might be changed as one option among actions.
설정이 사용자에 의해 변경되거나 초기값으로 복원될 수 있습니다.
Settings can be changed by the user or restored to default values.
In this sentence, '변경되거나' signifies that changing the plan is one of the alternatives that might happen.
계획이 변경되거나 연기될 수도 있습니다.
The plan can be altered or delayed.
The usage of '변경되거나' in this example stresses to be cautious to prevent data from being changed as one of the undesired outcomes.