Is it normal that we do not have any verification or notice when we create manually an equipment for a service call (serial number already exist… change the owner...already exist with another description or code, continue)?

As example, we create a new equipment manually with serial number, but this equipment already exist for same owner or was register with previous owner. and system let us create the same equipment twice without any notice or verification.

Is there any option that could be activate to have any kind of notice?