The Reset Destination feature can be applied to business rules, and resets a BP attribute to an empty state before performing a mapping. The purpose of the Reset Destination option is to create an output container. Since this can create performance overhead, the default setting is off.
The Reset Destination option is useful when creating a BP that includes a user activity inside a while loop. When a BP attribute with repeating nodes is continually reused, such as in a loop activity, it might be necessary to reset the attribute value to an empty state. When BPM populates these nodes during the looping process, it overwrites the data in the BP attribute. If the attribute contains more information than will be overwritten, there is leftover data in the node. In this case, extraneous information appears that does not reflect the current intended value of the attribute. The Reset Destination feature prevents this.
It is important to activate the Reset Destination option on the first rule to ensure that the first action in the mapping process resets the attribute to an empty state. The Reset Destination feature is set in the Business Rules Editor (for more information, see Editing Business Rules).