Yes, an amendment can be requested
The route depends on the change and the status of the file. A technical correction and a material change are different, and sending another document does not mean the request has been accepted.
Start with a clear explanation
Gather the filed return, filing confirmation and relevant document. Explain the original figure, the proposed change and the reason. This makes the request easier to review properly.
Check the procedure too
If an assessment has already arrived or another procedure is underway, check the deadlines and appropriate next step. An amendment request is not automatic approval, and another action may also be needed.
Sources and further information
This is general information within the scope discussed. It sets no filing deadlines, penalty amounts or outcome for an individual file. Annual guides are used for general principles only, not to carry forward thresholds from earlier years.