When we are creating a Customs Import Declarations in GTS with reference to a Purchase Order from ECC, somehow somewhere multiple values are getting added to the same partner function 'Carrier'. As a result customs declarations is created but system is dumping. when we are trying to display it system is dumping while trying to display it. We can see from the table that duplicate value has been added to the partner function.
Does anybody have any idea where to start the investigating? Any possible BADI or Customer-Exit where this can happen?
Looking forward to your suggestions!