Sales order should not PGI'd within 80 Hrs

Hi All,

Distributor will create SO today and vendor (logistic partner) will deliver products after 80Hrs from the date of PGI. So if distributor create another SO next day (tomorrow) for same customer and material (irrespective of order value and Qtys) then duplicate order be created.

In order to avoid this situation, system should not allow order to be deliver within 80 Hrs from the date of PGI.

Please suggest how to achieve this requirement and impact on other sub process including factory calender.

PS : They cant use EDI 855,