kmsKeyId  
  The Amazon Web Services Key Management Service (KMS) key ARN that SageMaker Feature Store uses to encrypt the Amazon S3 objects at rest using Amazon S3 server-side encryption.
The caller (either user or IAM role) of CreateFeatureGroup must have below permissions to the OnlineStore``KmsKeyId:
- "kms:Encrypt"
- "kms:Decrypt"
- "kms:DescribeKey"
- "kms:CreateGrant"
- "kms:RetireGrant"
- "kms:ReEncryptFrom"
- "kms:ReEncryptTo"
- "kms:GenerateDataKey"
- "kms:ListAliases"
- "kms:ListGrants"
- "kms:RevokeGrant"
The caller (either user or IAM role) to all DataPlane operations (PutRecord, GetRecord, DeleteRecord) must have the following permissions to the KmsKeyId:
- "kms:Decrypt"