Important:
This answer is based on tax law for the tax year ending 28 February 2020.
Answer:
According to the SARS Declaration of dividends tax via eFiling guide, (Paragraph 5.3.4 (and others) DETAILS OF DIVIDEND RECIPIENT), one must “select one of the following indicators is (sic) an amendment is being made:
‘Refund’
‘Deletion’
It would then open up a container with the heading “Adjustments (Refunds and corrections on tax payable for previous return periods) – see paragraph 6.7. You will see there is a container for “amounts of refunds on past return periods”).
We attach a copy of the guide for ease of reference.