AR Invoice allows duplicate line numbers
Summary:
AR  Invoice allows duplicate line numbers
Content (please ensure you mask any confidential information):
Hi, we have noticed we can enter AR invoices with duplicate line numbers . Is this a bug or a desired functionality  and is there a way to stop it from happening ? 
Version (include the version you are using, if applicable):
11.13.24.10.0
Code Snippet (add any code snippets that support your topic, if applicable):
None
0