SAP Message UCF5007 - Specify a key figure/attribute for method &1 in step &2

Diagnosis
In method &V1&, step &V2&, the strategy for posting differences isdefined either as "Unit with LOWER Value at Key Figure or Attribute" oras "Unit with HIGHER Value at Key Figure or Attribute". A key figure oran attribute must be specified for each of these posting strategies,the value of which is used for recording the difference.
No key figure or attribute has been specified for this method step.

System Response
The method definition has an error and cannot be saved.

Procedure
Specify a key figure or attribute for the method step.