Hi,
it may be connections confusion.
ex- in my project BW quality system have 2 source system connections.
1. form ECC Pre-prd to BW quality.
2. form ECC prd to BW quality.
check the logical name of the source system connections.
if your getting any connections ask to your basis team they will help.
how many source connections in BW prd.
Thanks,
Phani.