Hello team I am working on a requirement where if I cancel a sales order line then a cancellation

Summary:

Hello team I am working on a requirement where if I cancel a sales order line then a cancellation fees should be added to it.So my approach is to do it with the help of OM extension like if the status of the order line is "Cancellation Requested" then the extension should a new SO line to it.But while doing so I am getting the following error "The request failed because order management extension steps for adding a line after it is cancelled attempted to add a new line that references a transformed line. Occurs during event On Start of Submission