Genesys Cloud enables users to edit substitutions within canned responses through the Interaction Assets menu. To edit a substitution, users must have the "Responses > All > All" permission and navigate to Menu > Digital and Telephony > Interaction Assets > Canned Responses. The editing process involves selecting the desired substitution and clicking Edit, then entering a meaningful name (which Architect uses to call the substitution from the Set Participant Data action), a descriptive description, and a default value that displays if the substitution cannot be completed during an interaction. For example, if a substitution retrieves a customer's date of birth but the data is unavailable, the default text appears instead. After configuring these fields, users click Done to save the changes.