id attribute
If Action/Type is "read file", this attribute specifies the ID of the parameter containing the directory in which the file can be found.
If Action/Type is "replace", this attribute specifies the ID of the parameter that contains the ID of the parameter that has to be put in the command/response.
If Action/Type is "increment", this attribute specifies the ID of the parameter that holds the increment value.
Content Type
unsignedInt