...and what is the reason that you ask this question about the rejection in the MM space?
such complaints have to be posted in SCN Support space.
And since I cannot open your given link it has not been posted initially in MM either.
FB02 is further a Finance transaction, as it starts with a F , so it is the second reason that you are posting this thread in the wrong space.
if I search SCN with these words: balancing field in line item
then I get 730 results, a clear indication that it is a frequently asked question, even if I add the variable "Country" to the search term I get 16 hits, which is still more than enough.
and I believe you even get more hits (along with the right forum) if you use the error message number to search SCN