RAM Concept - Design in Eurocode - Corrosive environment

Hi Bentley team,

I am working on a project (by Eurocode) that is near the coast. So I set the environment in design strip to Corrosive. As I check design for crack width, strength and deflection .. everything is OK. But I got fail error 7.3 in Frequent Service Design.

I wonder what is the main problem on my model. I'm looking forward a response from your team.

Thank you for reading my issue.

Ha Thai.