To view these changes, go to Tools > Change Log from the SAP Business One menu bar. A change log window will open that lists the changes including user name so you can see who made the change, date and time so you know when they made a change, and all versions of that document or record. You can see how the record existed in a specific version. If there are multiple changes, you can hold down the CTRL key and click on two or more lines, then click on the Show Differences button to see a full list of what changed between iterations of the document.
With the change log in SAP Business One, you can see who made a change, what they changed, and when they did the change.