"PK_Customer_ID" is defined to contain unique values only. Allow duplicate value?

I click on NEW CONTACT in my custom solution and it creates a unique customer ID. Then when I click over to another tab such as Purchase Order or Work Order, and arrow down to that Contact I get the message above.

Please help.

Amy S

Amy,

Can you contact the developer of this solution? Your description doesn't tell us enough, only that Contacts each receive a unique Customer ID (primary key), and somehow what you're doing is duplicating the customer record and trying to save it with a duplicate primary key.

Maybe a screen shot?