How can I check the fields I've created? I've got a basic question - in Drupal 7 is there a way to simply manage the fields you've created through some sort of UI that is not admin/structure/types/manage/NODE_TYPE/fields?

I'm getting an error:

FieldException: Cannot change an existing field's type. in field_update_field() (line 234 of /var/www/vhosts/server_path/modules/field/field.crud.inc).


I'm trying to track down why this error is occurring and so far I've had no luck. I've checked some stuff on drupal.org, but I've not been able to find anything definitive to clear this up.

And help would be greatly appreciated.
You can activate "Field UI" module in your modules list.