When it comes to the phrase "fixed a limit," there are a variety of synonyms that can be used to convey the same idea of setting a boundary or cap. Some of these include established a maximum, imposed a restriction, defined a cutoff, created a boundary, established a cap, set a parameter, instituted a guideline, created a regulation, laid down a rule, and put a ceiling in place. Regardless of which term is used, the underlying meaning remains the same: a boundary has been established and must be adhered to in order to achieve a specific outcome or keep something within a certain range or level.