Hello,
I believe your requirement is system needs to calculate the total invoiced value to the customer till date and if the value is more than 10,000$ than LCIT should not be applied.
Can you let us know how the total invoice value is to be calculated? I mean is it the value from a particular date for example from 1 January of the year till date of creation of current sales orders or any other date range?
What happens in case of Returns and credit memos? Should value of these invoice reduced from total invoiced value?
One option could be to create a Z-Table which is updated every time is Invoice is created with say Customer code, Invoice number, Invoice date and Invoice Value. Along with this a Pricing Routine can be created and assigned to Pricing Procedure which will look at the Z-Table (at the time of creation of Sales Order) and activate / deactivate the LCIT condition as per the requirement.
Thanks,
Jignesh Mehta