Rule H1 states that the pre-notification period that can be required in the Payor's PAD Agreement cannot exceed 30 calendar days. This pre-notification period must be based on operational constraints and
must be less than 30 calendar days in most cases. In practice, you must specify the pre-notification period in business days (for example, 5 business days), as long as the period is less than 30 calendar days. To learn more, see section 17 of Rule H1 - External link..