Rack spacing and spray clearance limit more than the cabinet opening. An oversized plate can obstruct movement even if it slides onto the tines.
Understanding this situation
Some models offer approved rack adjustments, but these may reduce space elsewhere. The entire loaded arrangement needs to remain suitable, including glassware or utensils in the upper section.
A useful next step
Consult the model's loading guide and check clearance without running. Use another appropriate cleaning method for items that cannot fit correctly. Do not force the door or remove working wash components to accommodate a larger dish.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.