Hello,

For your MET examination application form , you should provide the marks of all available semesters, including the ones you have cleared. Since you have a backlog in the 3rd semester and are waiting for results, you can mention it as "Result Awaited" or "Backlog – Result Pending" wherever required.

If they ask for a document, you can upload your current marksheets and later update them once your backlog result is declared.

Hope it helps !