Parameter values must be URL-encoded. There are some characters, such as an
asterisk or space, that cannot go into a URL. There are equivalents of these
characters that you use in requests instead. For example, the URL encoded equivalent
of a space is %20. So, instead of writing Name=John Smith you would
write Name=John%20Smith.
Parameter Names and Values are Case Sensitive
Parameter names and values are case sensitive. For example, the following
declaration is fine.
SearchIndex=Apparel
The following examples return errors because the capitalization is incorrect.
Searchindex=Apparel
SearchIndex=apparel
As you can see in these examples, parameter names and values start with
capitals. If the name or value is a compound word, the beginning of each new
word is capitalized, for example, in the parameter name, SearchIndex, the
"I" is capitalized.