Table 42 uses a composit key made up by Code and "Minimum Amount". In report 7052 (and anywhere else you would like to reference rounding methods) there's a relation to table 42. If you setup multiple lines using the same code this gets weird. There should be header and lines whith Code and Description in the header and the res on the lines. You can leave table 42 as is. It's the header table that's missing. Then move current relations to table 42 to the new table