AWS internal error creating a 200MiB Lambda Layer

test.sh

# Try to create a 200MiB layer
head -c 209715200 /dev/random > file.dat
rm -f layer.zip && zip layer.zip file.dat
aws s3 cp layer.zip s3://my-bucket/my-key
aws lambda publish-layer-version --cli-connect-timeout 0 --layer-name large-200MiB-dep --content S3Bucket=my-bucket,S3Key=my-key

# Results in:
# An error occurred (ServiceException) when calling the PublishLayerVersion operation (reached max retries: 2): An error occurred and the request cannot be processed.

# One byte less and it works (`aws lambda publish-layer-version` takes about 60 secs)
head -c 209715199 /dev/random > file.dat
rm -f layer.zip && zip layer.zip file.dat
aws s3 cp layer.zip s3://my-bucket/my-key
aws lambda publish-layer-version --cli-connect-timeout 0 --layer-name large-199MiB-dep --content S3Bucket=my-bucket,S3Key=my-key

# Results in:
{
    "Content": {
        "Location": ...
        "CodeSha256": ...
        "CodeSize": 209749295
    },
    "LayerArn": ...
    "LayerVersionArn": ...
    "Description": ...
    "CreatedDate": ...
    "Version": 1
}