Getting an error while using @Version annotation

On an update are you passing a value into the @version column. As I recall if you pass null in that column it inserts a new row rather than doing an update

@rodgraham..
If we use @version there is no need to pass any value again...

@Pavani..
Are you updating @version column's primary key Id again,
If you do so,please do not update Id again.

Does the issue still persist? I agree with rodgraham in that,"if you pass null in that @version column it inserts a new row rather than doing an update". As I see your problem, i believe you are using "is appended to" instead of "is stored as". May be you saved the ac!value at input and also used "is appended to " at the outputs. And that is why you see two rows even when there are no @Version. Just a guess though ! But as a first call i suggest you to check the way you save inputs/outputs in your process models first.

Thank you all. issue got resolved. Your comments really helped me.

you're welcome :)