How can Time and Units under the billing tab be validated?

For all the SOAP Notes at the bottom of the Billing tab there is an Index for the Time range and Units:

Units will be displayed by default as per the above time range entered by the user:

If the user decides to update the units then the system displays an alert message for confirmation to save the updated unit value:

 

 

If the user clicks on Yes then the updated value will get saved and if the user clicks on No then the cursor will be redirected to the Units fields or the user to edit it. The value will not get saved till the user clicks on Yes button.

Note: If for any code the unit value is set to "1" and the SOAP bill radio button is selected as "Non timed code with 1 unit" then the unit value in the billing tab will always be displayed as "1"