Maximum Likelihood Classifier

Trying to do a supervised classification for land cover change in SNAP but continue to get the error “Bands in source product are of different dimensions.”

So far I have inputted my data in SNAP, changed the RGB Image Window to 4-3-2, created new vector data containers, drew vectors for the different classes, and went to maximum likelihood classifier in supervised classification tool and keep getting this error message.

How do I get around this?? I am looking for help!

If you are using Sentinel-2 data you have to use the S2 Resampling operator first because its bands have different spatial resolutions (10, 20, 60 m): Spatial - Resolutions - Sentinel-2 MSI - User Guides - Sentinel Online - Sentinel Online

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