Fields configuration

You can create a map where you have the section, fieldLabel and the fieldValue both defined in different keys and can iterate through that map when the button is clicked to see if it had a value. If not, you can use fv!item.fieldLabel to display the Error type and do the same for Error 

Somewhat like this

{
  a!map(
    section: "Personal details",
    field: "First Name",
    value: ri!personalDetails.firstName
  ),
  a!map(
    section: "Personal details",
    field: "Last Name",
    value: ri!personalDetails.lastName
  ),
  a!map(
    section: "Personal details",
    field: "Email Id",
    value: ri!personalDetails.email
  )
}

Sey that was not section it was created in card layout where I used a rich text as "personal details" does it work with the same

Yes it will work the same way.