1. A method for establishing a magnetic resonance system actuation sequence, the method comprising: acquiring field distribution maps only for a number of field distribution representation slices, wherein the field distribution representation slices represent a number of slices of a measurement region of the magnetic resonance system, wherein the number of field distribution representation slices is less than the number of slices of the measurement region; establishing at least one radiofrequency pulse train based on the number of field distribution representation maps; and operating the magnetic resonance system using the magnetic resonance system actuation sequence, wherein the at least one radiofrequency pulse train is emitted into the measurement region.