Error during Polarimetric Matrix Generation with SLC Product

I am doing preprocessing of S1 SLC product with IW swath in SNAP. I am following this steps like- i)S-1 TOPS Split ii) Apply Orbit File iii)Calibrate iv) S-1 TOPS Debrust v) Polarimetric Matrix Generation.
But When I am running Polarimetric Matrix Generation with C2 Polarimetric Matrix it is showing Input should be a single look complex SLC Product error. Here My question is I am using only SLC product then why this error coming?

have you selected “complex output” during calibration?

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No, I did not select “complex output” during calibration.

Where is the option in calibration?


ok, Now its run perfectly. thank you.