Requirements for setting up the link
To set up the link Synergy needs to be accessible from TOPdesk and a Synergy account with enough permissions needs to be available to create the invoice. TOPdesk can help with adjusting this solutions if your use case is different but we have limited knowledge of the Synergy API so having an Synergy consultant to help will be necessary.
Total duration of registered time cannot be more than 24 hours in this use case. If this is needed an adjustment needs to be made.