Which of the following requires the use of custom validations? Note: There are 2 correct answers to this question.

Which of the following requires the use of custom validations? Note: There are 2 correct answers to this question.
A . An error message when planners enter a promotion without changing pay grade
B . A warning message when the budget is exceeded
C . An error message when adjustments are entered in two different fields
D . An error message when the maximum guideline is exceeded

Answer: A B