The DSN code is required for the s50cloud.exe to read your Sage50 data correctly.

DSN Table lookup.

Sage Version DSN Code ( cut and paste into your s50cloud desktop application )
Sage Line 50 v25 SageLine50v25
Sage Line 50 v24 SageLine50v24
Sage Line 50 v23 SageLine50v23
Sage Line 50 v22 SageLine50v22