The conversion of units of measure is required to convert business measurements into other units. Business measurements encompass physical measurements which are either assigned to a dimension or are nondimensional. Nondimensional measurements are understood as countable measurements (palette, unit..).
You differentiate between conversions for which you only need to enter a source and target unit in order to perform conversion and conversions for which specifying these values alone is not sufficient. For the latter, you have to enter a conversion factor which is derived from a characteristic or a characteristic combination (compound characteristic) and the corresponding properties.
Measurements of length
Conversions within the same dimension ID (T006DIMID)  for example, length:
1 m = 100 cm (linear correlation)
Meter and Centimeter both belong to dimension ID LENGTH.
Measurements of number associated with measurements of weight
Conversions involving different dimension IDs  for example, number and weight.
1 unit = 25 g (linear correlation)
Unit has dimension ID AAAADL and Gram has dimension ID MASS.
Number 
Unit 
Number 
Unit 


1 
Chocolate bar 
= 
25 
g 
1 
Small carton 
= 
12 
Chocolate bar 
1 
Large carton 
= 
20 
Small carton 
1 
Europallet 
= 
40 
Large carton 
Question: How many chocolate bars fit on one europallet (PAL)?