when you have a dynamic Horizon in your credit management, the horizon period will be accounted if the line item’s material availability date is within this specified Horizon Period. explained as below.
horizon Period : 1 month ( 30 Days from 29th July 2013, hence 30th August 2013).
Sales order with Requested delivery date : 25th September 2013.
lets assume that the material availability date for this sales order line is 29th August, as it was around 25+ days of route.
then on such cases this order will be relevant for credit management calculations as per the current date on 29th July.
Hence material availability date is the key parameter to decide on horizon period & not the customer requested delivery date.