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Messaging
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Exchange messages about an invoice
Exchanging messages on an order
Exchange messages about an invoice
How can I communicate with my counterparty about an invoice?
How is the message exchange for a particular document presented?
How can I know if I have a new message on one of my invoices?
Why can’t I exchange messages on certain invoices?
Exchanging messages on an order
How to exchange a message about an order?
How can I know if I have a new message on one of my orders?
Frequently asked questions
Release note 2026
What is an “establishment” and what is it used for?
How to create a user?
How to register on SY? (invited buyer)
Guest Supplier Tutorials
What is SY?
What is the Cegedim Group?
How do I track issued invoices?
What configuration is required to access SY?
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