If you are talking about the ROE WEB interface that we implemented a few years ago, then there are 2 big steps to take.
One is the configuration in SAP, through the IMG (Payroll > Payroll: Canada > Reporting and Statistics > Record of Employment (ROE) > ROE Workbench (New Version) ), and the other one is to contact Service Canada to set-up your access to their web interface (access to a test environment can sometimes be achieved, but it's hard).
I'd have to look into my notes from a few years past for more detailed information, but that should be a good starting point for now.
Configuration should take a day or two, but documenting the configuration, and testing it may take a few.
Then you'll have to document the new procedure for the users (including some screen captures from the Service Canada website)
and prepare a training session, hopefully with the help of a Service Canada ROE Web Trainer.
I noticed that HRSDC only accepts 500 employees per XML file.
Do you guys know if SAP has this functionality already implemented where it will split runs of more than 500 employees?
Also does anyone know if there is any specific procedure of submitting ROE to HRSDC in English and French? Or does this not make a difference to HRSDC?