Check bucket policies: Make sure that the bucket policy is configured to allow the necessary permissions for the user or role that is experiencing permission issues. You can do this by going to the S3 management console, selecting the bucket, and then checking the bucket policy tab.
Check IAM policies: Ensure that the IAM policies associated with the user or role have the necessary permissions to access the bucket and perform the desired actions. You can do this by going to the IAM management console, selecting the user or role, and then checking the policies tab.
Check object permissions: If the permission issue is related to specific objects within the bucket, check the object permissions to ensure that the user or role has the necessary permissions to access and modify those objects. You can do this by going to the S3 management console, selecting the object, and then checking the permissions tab.
Use the AWS CLI: If you are comfortable using the command line interface, you can use the AWS CLI to troubleshoot permission issues in S3. You can use commands like aws s3 ls, aws s3 cp, and aws s3 rm to test permissions and troubleshoot any issues.
Contact AWS Support: If you are unable to resolve the permission issues after trying the above steps, you can contact AWS Support for further assistance. They can help you troubleshoot and resolve any permission issues that may be causing problems with accessing or modifying objects in S3.