# How Do I Prevent Attributes From Being Copied into New List Elements?

To keep their prime keys consistent, key fields are automatically copied (based on name matching) from a parent list element into new child elements (for example, those created by using the scroll + button). If you want to inhibit this operation for certain fields, define the TabMenu function `dontCopyKeyNames_<LIST NAME>` to return an array of fields that should not be copied into new elements of the list named `LIST_NAME`.

Example:

    			function dontCopyKeyNames_ENRL_FLD() {
    			   return ['SEQ_NUM']
    			}

Parent topic: Miscellaneous How-To's