Paul Berglund - 3 years ago
It should have the same functionality as any text field - unique and external id - since that is what is displayed in the lookup or master-detail field. That would make integration with other systems more user friendly - you can see the same value displayed by the other systems.
Attila Gulyas - 3 years ago
Thanks to Devendra, there is a solution for this:
In short, create a duplicate rule or you can create a matching rule and reference that in a duplicate rule. It works so far.
Deepak Artal - 4 years ago
I totally agree with everyone that Name field, just like other custom field, must have a "Do not Allow Duplicates" option.
I used the VLOOKUP idea that Wenjun Zhu gave in a previous comment.
Thank you Wenjun.