Production Order : Split of variance in COPA

Hi,

I am testing the variance flow to COPA in production order settlement scenario..

Below is the cost trend of the production order.

Below is the resulting copa document whic is generated from settlement

Below are the cost element and value field assignments.(in PA transfer structure configuration)

I want to know, how the variance split happened in the COPA document. Because in cost trend , the entire variance is during GI stage.

SO this pertains to the GL account 50000 , as seen in the cost trend. How did the system split the amount in COPA document

Regards

SR