Backflushing Error

Good evening,

I am trying to Backflush a Fin product and I am getting the following message in COGIA report: -

The repetitive manufacturing profile is set for the reporting point procedure. However, either no reporting points exist for the material or they are incorrect. Two common reasons for this are:

u2022 The repetitive manufacturing profile has been changed in the current session.

u2022 You have not defined any milestone operations in the routing.

u2022 When creating the product cost collector, no reporting points were created.

I am a bit little bit puzzled on this,

What should I check?

Thanks in advance.