I am using sam for setting up infrastructure. During sam deploy, uploading the artifacts to s3 bucket is failing with error

botocore.exceptions.ClientError: An error occurred (403) when calling the PutObject operation: Forbidden

I am a root user by the way, I have all the necessary permissions. I verified that I have necessary permission by running the command. This is able to successfully upload the object to s3 but failing during sam deploy.

aws s3api put-object --bucket sam-app --key test --body test.txt

I tried everything:

• Enabled the public access for the bucket
• Properly set the bucket policy

Please help why the explicit s3 put-object is successful in aws cli but why it’s failing with sam deploy.

FYI, I am running sam deploy and put-object cli command on sam bucket i.e sam-app