What is maximum number of contacts can be created or added in billing customer account

Summary:

What is the maximum number limit of contacts that can be added or created from the Customer Account?

Navigation path of adding contacts in Customer Account:

Navigator→ Receivables→ Billing→ Click on the Task icon on the right side of the page Under the Customers section, Manage Customers→ Search by specific Account Number → click on Account number to see Account details→ Go to Communication Tab→ Edit Contacts → Click on Actions→ Create Contact to create contact or click on Add contact to add existing contact to the account.

Screenshot of how to create the contact in Customer Account :

Version (include the version you are using, if applicable):