Dear sir,
We had a issue with piping having material FRP .which we have taken from custom material & defined custom properties.
For piping we gave one case of operating condition where it worked well but when we added another case of hydro test it failed in operating.
Please guide us.

The hydrotest case should not be affecting the operating case. What else changed?

If you can't resolve this, open a Support Request on Smart Support and send in the job files.