caldera_forms_max_form_revisions-50.php

<?php
/**
* Store up to 50 revisions of Caldera Forms form configuration per form
*/
add_filter( 'caldera_forms_max_form_revisions', function(){
  return 50;
});

caldera_forms_max_form_revisions-many.php

<?php
/**
* Store basically unlimitted revisions of Caldera Forms form configurations for one specific form
*/
add_filter( 'caldera_forms_max_form_revisions', function( $max, $form ){
  //IMPORTANT Change this to match your form ID
  if( 'CF13435' === $form[ 'ID ] ){
      return 2147483647;
  }
  
  return $max;
  
}, 10,2);

caldera_forms_max_form_revisions-none.php

<?php
/**
* Prevent saving of Caldera Forms form configuration revisions
*/
add_filter( 'caldera_forms_max_form_revisions', '__return_false' );