Quantities of the sub-items are different from qty of the main item

What causes this issue?

You have distributed the quantity of the main item among the sub-items.
However, the total of all the sub-items does not match the quantity of
the main item.

System Response

The system can only post the goods movement for the main item if the
total of all the sub-items is consistent with the quantity of the main
item.

How to fix this error?

Adjust the distribution. You can also change the quantity of the main
item by entering a new constellation of the quantities for the
sub-items.
However, do not exit the distribution screen using the <LS>Cancel</>
function, as all changes will be reset and the stock will reurn to the
original inconsistent status.

Error message extract from SAP system. Copyright SAP SE.