Stage ship confirm entry error

Hello, we are trying to stage ship confirm orders and are getting this error. we have checked the dates on all the master packs, customer packs and they are all today.

we have only just started to use master pack and i am the master pack numbers are the same as customer pack numbers we shipped on 1/9/2018. and those are all shipped. there are some MP that have worked even though there are customer packs with the same numbers.

any ideas?

Change the ship date on your pack to today. Or, you have to adjust the earliest apply date system wide to before 1/9/2018

it already is, all the dates on the master pack and the customer pack are already today

so i have managed to stage ship confirm these master packs by going back into the classic screen and doing it from there… i have opened a case with epicCare