I am creating a new entity in CRM 4.0 to track our projects. One field is a Project Code, and I'd like to have a way to ensure that this field contains a unique value.
I understand that this is not a key, and it won't be used as a key, but for human readability/tracking purposes, it would be nice if I could tell the user that the code he just entered has already been used.
I am thinking that a webservice/javascript call will be necessary, but I wanted to see if anyone else has tackled this issue already.