How to activate the check digit validation for Israel?

Summary:

How to activate the bank account check digit so when supplier user (via portal) or internal user enters the bank account it will be validated

Content (required):

In the section of the AP implementation guide of bank account validation it says that the check digit is optional. How this can be activated?

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

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