Generally the datasources that are generic begin with 0, the datasources that are not begin with Z or Y. You can also check in transaction RSA5 which is the transaction for implementing/installing all standard 0* datasources on the source-side before replication. If you change any of these datasources you will change them to non-standard and the naming convention dictates that the 0 is replaced with a Z or Y.
Thanks,
Colm