VariableS3_STORAGE_2_KMS_KEY_ARN
Introduced Version1.47.1
Description ARN to the KMS key when using server side encryption on a 2nd bucket

This environment variable is the ARN (bucket Amazon Resource Name) to the KMS key when using server side encryption on a 2nd bucket, and it points to the KMS key for encrypting objects in S3, see Amazon S3 documentation.