[just another ref]

In our 13-14 year old boys league the home team must furnish the keeper of the official book for the evening. This is to say the least a problem at times. Probably 1 out of 5 that keep the book really knows how, and probably at least 1 out of 5 has no clue, but somebody's gotta do it so........ to make a long story short we were credited with 2 runs more than we had, which pushed us to a 10 run
(mercy rule) victory after 4 1/2 innings. A few minutes later the visitor's scorekeeper pointed out the mistake.
(what took her so long to speak up?) We discussed possibilities for a little while, (several players had left)
and the visitor's coaches basically said, "Forget it. Our butts are kicked. Let's go home."

What is the rule in this case? Dixie Boys baseball player under Official Baseball Rules.