Your company runs an Azure Data Factory pipeline that copies data from an FTP server to Azure Blob Storage daily. Recently, the pipeline has been failing with the error: 'Failure happened on 'Source' side. ErrorCode=UserErrorFailedFileOperation, Error details: The remote server returned an error: (550) File unavailable (e.g., file not found, no access).' The FTP server administrator confirms that the file exists and the credentials are correct. You need to resolve the issue with minimal administrative effort. What should you do?