SAP Message 56389 - Trip country for 'Additional destination' same as 'First destination'

Diagnosis
In the trip itinerary you have entered an additional destination butnot filled the Trip country field. This is required for additional tripdestinations.

System Response
The system enters the trip country of the first destination for thisadditional destination.

Procedure
If your additional destination is not in the same trip country as yourfirst destination, overwrite the trip country for the additionaldestination.