Jenkins Copy folder exception

Jenkins setup:2.252

configured a pipeline to transfer data from one folder to another folder .
.Code:stage(‘Backup’) {

            continueOnError: false, 
            failOnError: true,
            publishers: [
                    configName: '10_224_14_87_', 
                    verbose: true,
                    transfers: [
                            execCommand: 'robocopy "D:/sourcedata/testfolder/" "D:/destinydata/" /e /mir'

Error: Able to copy the code but getting below error.

Exception when publishing, exception message [Exec exit status not zero. Status [1]]

robocopy returns errorcodes in the range from 0 to 7 for successful operation.
See Robocopy Exit Codes - Windows CMD -