2667237 - Error opening file for an ABAP dataflow - Data Services

• ABAP workflow failing with permission error.
• A Data Services job is accessing a shared drive.
• Randomly fails with an access error.
• Permissions are not an issue.
• Re-run the job and it completes
• Error:  "R3C-150605: |Data flow <dataflowname> The SAP job was canceled for host < >, job name <Jobname 06/06/18 01:00:28>, job count <01002800>, job log from SAP
   <20180606, 010029, Job started
   20180606, 010000, Step 001 started (program ABAP_PROGRAM, variant &0000000000, user ID )
   20180606, 010000, Error at OPEN '<file>' (check file)
   20180606, 010000, Job cancelled after system exception ERROR_MESSAGE>"   

SAP Data Services

KBA , EIM-DS-SAP , SAP Interfaces , EIM-DS , Data Services , Problem