Although it almost seems that the user import contracts from e-Synergy this is not the case. e-Synergy generates an xml that contains information that Exact Globe 200x uses to create invoices. A few settings should be checked in Exact Globe 200x before any 'contract' prolonged in e-Synergy can be imported. These settings are related to the sales journals and invoice codes. You can differentiate the invoices generated from imported 'contracts' by using an invoice code. This invoice code should be the same as the one is used in e-Synergy
The next setting should be changed to avoid that invoice numbers are created from the next free invoice number in Exact Globe 200x. Once it is set properly invoice numbers will be generated from the next free invoice number per journal.
This option is not mandatory because different invoice codes can be linked to one and the same sales journal. In case you like to differentiate the contract invoices with other importerd 'invoices' (for example consultancy requests or webshop sales requests) a new journal can be created.