The title deed always reads '....measuring xyz hectares or thereabouts......'
So the question is: how large is the discrepancy? Can it be covered under the word 'thereabouts'?
Just out of curiosity; do you know the difference between acres and hectares? One hectare is equivalent to about 2.5 acres. Titles show the size of land in hectares.....
Nothing is real unless it can be named; nothing has value unless it can be sold; money is worthless unless you spend it.