I am importing custom activities (with some custom fields in them) and getting "'1' is not a valid option for field custom_42."
The problem is that I can't figure out which field it's referring to. "1" is not a value I am trying to import so that's no help. Do I have to go into my back end to find the the interface label for "custom_42" or is that exposed in the admin interface anywhere?
Running 4.6.4 on Drupal.