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NOW () – ( 15/1440 ) can be checked against the record’s LastModifiedDate in the Validation Rule to prevent/avoid/lock Salesforce records update for 15 minutes .
Sample Validation Rule:
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Validation Rule Formula:
AND(
NOT( ISNEW() ),
PRIORVALUE( LastModifiedDate ) >= NOW () - ( 15/1440 )
)
Output:
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