The earlier problem related to "no response from 9F" has been resolved as of 14:45 on 22 November 2021.
Agents selling Eurostar via 9F on GDS should now be able to proceed without any problem.
PNR changes/e-Ticket transactions made during the period 20 November - 14:45 on the 22 November may still be subject to error. If you receive an ERC error message, then please issue a new ticket in a new PNR.
If you encounter any other type of error then please email firstname.lastname@example.org with the full details of the issue.