Enter the name of the customer attribute that holds the door code.
If the carrier sometimes needs a door code to enter the customer's building, the door code needs to be saved on the customer, in a customer attribute in the other system. Enter which attribute that is.
Good to know
The value is typed as free text, because Junipeer can't fetch the list from the other system. Type it exactly as it is named there – same spelling and same upper/lower case.