I am seeing an option to show the external ID fields in the editor. When checked with the RMC help documentation, I found the field is used to display a second name (within parenthesis) in addition the presentation name.
I am wondering if "External ID" field has any specific other uses, other than just displaying as a second name. And, what is the purpose of displaying a second name in addition to the presentation name. I am just curious to understand, if this field values can be effectively used to build any other functionality.
Appreciate your help on this.