KO88: Change of Settlement Cost element specifically for one Internal Order

Hi All

I have below requirement:

We need to change settings of transaction KO88 (assessment of Internal Order). Now posting is being made to a particular account Say 'X' for all Internal Orders. We need to change G/L account to 'Y' for posting for one of the internal order.

In the configuration, in allocation structure we have defined settlement cost element as 'X'.

My question is can we change 'X' to 'Y' for a particular Internal order while KO88. Any user exit or substitution..?

Regards

Neeraj Bhardwaj