First/Last Name Acceptable Characters

Hello team TabaPay 👋

Good day!

When doing Create Transaction and passing first/last name of account owners. We're seeing customers place characters such as ( & ) which is causing TabaPay to throw:

Unhandled tabapay response: 
<html>
	<head>
		<title>406 Not Acceptable</title>
	</head>
	<body>
		<center><h1>406 Not Acceptable</h1></center>
		<hr><center>nginx</center>
	</body>
</html>

Is it possible for:

Documentation to share of Regex of what are acceptable characters? Unsure if TabaPay accepts characters like é, ,, . for example.
Input validation placed on names to better inform us when it goes wrong.

Thanks team!