When we have multiple columns set as "Key field" which field takes precedence for showing the parts list.
Solution Priority of the "Key Field" is based on which attribute has the maximum different values provided it is set as Key field. If we remove the Key Field setting from that attribute then it would switch to the next attribute with maximum different values for that attribute to show the parts list
Notes and References 9057331
Hardware/Software Configuration Platform: INTL64
OS Version: 764SP1