What is the value of Evaluation Class 06 for WTs 0001 and 0002?
Since it can only have one value (either 10, 11, 12 or something else), there is no need to query the Wage Type for every return value. If it's not 12, then there is no need to query the WT for that value.
For example, if WT 0001 has value 11 for Evaluation Class 06, then there is no need to query for that WT for values 10 and 12. If WT 0001 has value 11 and WT 0002 has value 12, then Operation WGTYP? is not required for return value 10, and Operation WTGYP? for return value 11 requires only 2 return values, **** and 0001 (and similarly for return value 12 but with return value 0002).