Not for every mode. A tray approved for conventional heating may be unsuitable when microwave energy is used, even inside the same appliance.
What the observation means
Combination models have mode-specific accessory rules. The fact that a metal shelf was supplied does not mean every metal container or every shelf position is approved for microwave operation. Packaging instructions must also match the chosen method.
A useful next step
Consult the exact accessory table before starting and choose only the permitted combination. If arcing, smoke or damage occurs, stop the appliance and seek advice. Do not repeat the programme to see whether the sparks disappear or substitute foil as a protective barrier.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.