Is there any settings in Acumatica that would show some sort of error that the same Name, Email Address, Mailing Address, or Telephone Number has been used and is already associated with another customer profile?
Answer
Prevent Duplicate Customers
Best answer by dcomerford
You could look at using the Duplicate Validation if you have CRM but it only works with Leads/Contacts and Business Accounts. You would need to do a customisation to do it on the customer record.

Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.