French Invoice

FSmeets

Goodmorning all,

Since I didn't know where to drop this topic else, I will drop my question here.
We have to design invoice lay-outs for several European countries.
We are invoicing our customer for the subscription they have plus for the services they use outside their subscription, called overruns.
Next to that, we also can send the customer a detailed invoice/specification, where the customer can see more information per subscription and per overrun transaction.

Now I'm wondering, is it by French law mandatory to put the period of a service on an invoice?

Best regards,
Frank