Hi Beverley, 

Depending on what kind of transaction this is will dictate how you can make this change. I think you will find this guide helpful as it asks you questions about the transaction and gives a more personalised answer.  Correct a transaction

If that guide has not helped, I will need you to  provide me with:  what transaction type it is, how you want to correct it and whether is has been bank or vat reconciled.

This will help us have a better understanding of what you want to change and how you want to change it. 

If this has helped, please let me know by clicking "verify" - it helps the community out a lot! 

Thanks, 

Eric, 

Sage UKI