Hi,
are you taking about BW data source or ECC data source?
are you created the data source in BW or ECC system?
ex- have BW dev system and have source system connections form ecc dev to bw dev
you can replicate the data source form ECC dev to BW dev.
another connection for qas ecc to bw dev you can replicate the data source form ecc to BW dev
another connection for ecc pre-prod to Bw you can replicate the data source form ecc pre prd to BW dev system.
all source system connections no error then you are able to replicate the all data source form source
system to target systems.
Thanks,
Phani.