In case of invalid or missing values, this gets a list of the error messages separated by a '\n' char.

In case of invalid or missing values, this gets a mapping of the error messages with the format "[ReportParameterGuid]=[ErrorMessage]".
When more than one report parameter has an error text, the messages are separated by a '\n' char.

Gets a mapping that contains a list of the dependent report parameters for an other report parameter. E.g. the available choices of a 'Products' parameter may depend on the value of the 'ProductCategory' parameter.

Gets the set of report parameters that is required to continue the export or print.

Gets or sets how List & Label shall proceed after this event, e.g. check the defined parameter values or stop the export.