All S4 partners are required to provide pre-sales engineering support and 1st level technical support to their dealers and integrators. For Schneider Electric dealers and branches the best way to request this support is to email the problem or assistance request details into the Product Support (PSS) queue directly:
product.support@schneider-electric.com
Alternatively, there are different dial-in numbers people can use to log a new case (one for each of the three different cities where PSS is located).
Emailing this address (or calling in and dictating your case details to the person manning the phone) starts the process. PSS will facilitate any necessary escalation within the Schneider Electric support organizations or to The S4 Group.