Document includes already cleared items - reversal not possible

What causes this issue?

A reverse posting clears all line items that are managed as open items.
This is not possible if one of the items in question has already been
cleared by another method.

System Response

Error message.

How to fix this error?

If you really want to reverse the document with the number you
specified, display the cleared items and reset all those items for
which you can find clearing document numbers. Then repeat the reverse
transaction.

Error message extract from SAP system. Copyright SAP SE.