HI Raoul,
No need to activate and de activate CIF when ever you stop ECC system.
Reason is you will send data to APO only When ECC is not available i.e., RFCs not working then you will set up the connections and do data transfers.
Check any data transfer is happening by directly/batch. Postpone those activities..
Prior to shut down ECC/SCM send remainders to users that the systems will not be available.
Use these 2 programs from SCM side when you have stopped ECC.
RSTRFCQ1 : Stop Outbound Queue
RSTRFCQ3 : Restart Outbound Queue.
In our project we have to postpone/stop the jobs for data transfers between ECC and APO.
However you will be having daily CIF jobs to make ECC and APO in synch. So, once you re start your ECC regular CIF jobs will activate new objects(master and trnasaction data) and will deactivate lod data.
Thanks,
Bala.