Use
You use this function if the travel agency and the airlines work in separate systems (see
Distributed System Landscape for Travel Agency and Airline). If the flight data for an airline changes, these changes have to be communicated to and included in all the other systems.You can use this function to send updated flight data from an airline system to the other systems. When you do so, data about the availability of flights is not replicated.
Changes to flight data are not automatically communicated to the other systems. This means that if you change flight data, you have to manually replicate the changes.

This function is implemented by the SAPBC_REPLICATE_FLIGHTS report. Read the documentation about this report.