I am using HRTRV_IF_MODIFY_TRIP to modify trip requests but it does not work properly. The changes should only affect to the header but, when the trip already has receipts or Additional destinations, it clears it all.
Is there any parameter that I am missing to avoid the modification of all the rest of data? I am only passing the header data in framedata.
Any other FM to do the change only to the header would be greatly appreciated.
Thanks a lot for your help,