The program automatically maps the procedures and functions of one module to those of the other as part of modules comparison. Since the mapping is done according to name, names can coincide between the modules being compared. However, the procedures or functions themselves might differ. On the other hand, the names could differ while the objects are the same. In such cases you must set the mapping manually.
In the window in the procedure (function) list select the procedure (function) that corresponds to the designated one and specify that they map to each other.