aws: error: argument command: Invalid choice, valid choices are: this is the error showing with some number of commands

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aws rekognition index-faces \
--image '{"S3Object":{"Bucket":"mybucketname","Name":"S3ObjectKey"}}' \
--collection-id "image1" \
--region us-east-1 \
--profile adminuser

That is my code which I'm running on terminal, I tried but don't know why is that error coming. What changes should I do??

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