Activating Change Pointers in SAP ECC for SAP GTS
Before transferring any data from the SAP ECC feeder system to the SAP GTS system, we have to activate three change pointers in SAP ECC for SAP GTS, these are given below. 
1. Activate Change Pointers Globally
2. Activate Change Pointers for Message Types
3. Activate Change Pointers for Reduced Messages
Like this way we have to activate Change Pointers in SAP ECC for SAP GTS