Each object of the User task type must be carried out in the BPMN diagram by a single organizational element. This means that the function has an assigned function allocation diagram. The function allocation diagram contains an occurrence copy of the task that is linked to the organizational element via a single connection of the carries out type.
Exactly one position must be linked to a function via a connection of the carries out type.
Exactly one role must be linked to a function via a connection of the carries out type.
Exactly one organizational unit must be linked to a function via a connection of the carries out type.
Exactly one group must be linked to a function via a connection of the carries out type.