Quite a lot of information is asked of your employees for some projects. The details you have to fill in for your employers is determined by the main contractor.
In this case, we can not indicate which information you need to fill in and what the underlying idea is. The choice for the required information lies with the main contractor. If you have any questions about the details you need to fill in, it is best to contact the contact person of the main contractor assigned to the project concerned.
You will find this contact person in the email with the invitation to enter your details.