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Please refer to the document for more details about Lambda function name and Environment Variable File path . AWS Lambda - Environment Variable File and zip File location options
KMS detail: AWS KMS key is required to encrypt the secured variables before adding them to Lambda function. If we don’t have any secured variables in that case we don’t required to configure KMS key detail in the project. In our scenario we are adding both secured and non-secured variables to the Lambda function. Key Id or Key ARN details, both are accepted. Please refer to the document for more details. https://docs.aws.amazon.com/kms/latest/developerguide/overview.html
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