double.clutching

means the combined abilities of searching a remote file index for valid values and also searching the local (current) file index for specific items.

Double-clutching provides a unique feature when the local index is specified before the remote index in the input-conversion of an attribute definition. On a 'new' screen, if a new value is entered at the attribute specified for double-clutching, and an item already exists on file containing this same value, that item will be automatically retrieved by the Update processor. For example, consider an Update processor entity screen where the 'phone' attribute appears first. If this attribute is set up as described above, and a user enters a phone number that is already on file, that item will be retrieved. In this example, this feature prevents the entry of the same phone number for two different people.

This feature is only activated on new, unchanged items.

Note that specifying the remote index before the local index disables this feature.