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Extend Salesforce with Clicks, Not Code
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            ISCHANGED

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            ISCHANGED

            Compares the value of a field to the previous value and returns TRUE if the values are different. If the values are the same, this function returns FALSE.

            Use

            ISCHANGED(field) and replace field with the name of the field you want to compare.

            Tips

            • This function is available only in:
              • Assignment rules
              • Validation rules
              • Field updates
              • Workflow rules if the evaluation criteria is set to Evaluate the rule when a record is: created, and every time it’s edited .
              • Formula criteria for executing actions in Process Builder.
            • Use the NOT function to reverse the return values of TRUE and FALSE.
            • This function returns FALSE when evaluating any field on a newly created record.
            • If a text field was previously blank, this function returns TRUE when it contains any value.
            • For number, percent, or currency fields, this function returns TRUE when:
              • The field was blank and now contains any value
              • The field was zero and now is blank
              • The field was zero and now contains any other value
            Validation Rule Example
            Validation Rule Example The following validation rule prevents users from changing an object name after it has been created: ISCHANGED(Name).

            NOT(AND(ISCHANGED(Priority), ISPICKVAL(Priority, “Low”))) is a validation rule that ensures if a user changes the Priority of a case, the new priority cannot be “Low.”

            NOT(AND(ISCHANGED(CloseDate), ​OR(MONTH(CloseDate) <> MONTH(TODAY()), ​YEAR(CloseDate) <> YEAR(TODAY())),$Profile.Name <> "Sales Manager")) is a validation rule that prevents a user from changing the Close Date of an opportunity to a date outside of the current month and year unless that user has the Sales Manager profile.

            Note
            Note $Profile merge fields are only available in Enterprise, Unlimited, Performance, and Developer Editions.
             
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