How to change an error message in the template configurator?

Summary:

Hello,

I need to change the error message displayed in the model configurator when clicking on the add items button in the transaction, before clicking on the save button. Is it possible to make this change?

I am inserting an attachment to demonstrate the message in question.

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):