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The RateAndForward Bundle sends a billing record twice through the rating process: once using the rating code and rating key set on the billing record, and once using the rating code and rating key set on the bundle, if present (at least one of the parameters RATINGCODE and RATINGKEY have to be set). The results of those two rating processes are addedaccumulated, and will represent the rated value of the billing record.
It is a prerequisite that the two rating processes each return only one invoice detail line, otherwise the RateAndForward Bundle cannot be used (a BundleConfigurationException with message "Configuration problem" will be thrown in this case). This means a.o. that the parameter RATING.PARAMETERS.SEPERATE_INITIAL_LINE should be set to NO.
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