Special Chars in CPQ Single select menu attribute throwing error

Summary:

In CPQ data table, we are storing the data for city country address line etc. And showing those values in the dropdown.
So whenever user is selecting a value with some characters included, ( ì ë 3 á etc), it is thrwoing error as Invalid value.
How can this issue be resolved.

Content (please ensure you mask any confidential information):

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

Code Snippet (add any code snippets that support your topic, if applicable):