Abstract: The present application relates to a checkable plug-in connection comprising a plug having at least one latching element, a verification element which is secured to the plug via a connection element so as to be prevented from being removed, and a mating plug which can be connected to the plug and comprises at least one counter-latching element. The plug-in connection is configured so as to be able to pass from a pre-connection configuration, in which the verification element is prevented from being removed from the plug by the connection element and in which the plug and mating plug are separate from one another, into an end connection configuration, in which the counter-latching element is engaged with the at least one latching element and in which the plug and mating plug are prevented from being pulled apart.

Abstract: The method according to the invention comprises the following steps: a) securely attaching the verification element (5) to the plug (4); b) connecting the plug (4) and mating plug (3); c) locking together the plug (4) and mating plug (3) whilst simultaneously releasing the attachment of the verification element (5); and d) removing the verification element (5) from the plug (4).