Can I apply for the SOP now if I have mark sheets from the first to sixth semester?

Yes, you can start drafting your Statement of Purpose (SOP) now using your first to sixth semester mark sheets. These transcripts are enough to highlight your academic strengths and motivation in your SOP at this stage.

For your actual application, most German universities will require a complete transcript, including final semester grades. If your final grades are not available yet, you may need to submit a provisional transcript or a letter from your university confirming your expected graduation and anticipated results.