2.2 Compare exchange rate in routine ZZ_OTHER_EXCH_RATE_INFO (it could be either entered exchange rate or exchange rate with type M) whether they are equal to exchange rate get from TCURR table with exchange rate type M. If they are equal, overwrite exchange rate by selling rate type from company code setting (this case, rate type B). If two rates are not equal (entered exchange rate), exit from routine without any being overwritten.