Allowed and not allowed Ascii Characters for Names and Descriptions

why are some ascii characters allowe and others not? names are often used by litmus edge to build the different topics used to access the data certain ascii characters are not supported to build these topics and would lead to a difference between the actual name and the resulting topic which could lead to confusion other characters can cause issues with other services which have database backends therefore to ensure a smooth operation, certain characters can not be supported allowed and not allowed ascii characters for names allowd = green not allowed = red allowed and not allowed ascii characters for descriptions allowd = green not allowed = red