Each time Dictionary is called, it requests data from the DB. Therefore, the use of repeated dictionary blocks degrades the internal DB performance.
This issue is being improved, and if you use a dictionary block that is called multiple times in one bizUnit, it is recommended to use the value of the dictionary block as a variable.
In this case, the dictionary value is called only once, and the dictionary value stored in the variable is called in other locations, so you can proceed without performance degradation.