Continue checking on the issue of POS2NAV of SSI Sales Audit. I also tried uploading the poll file on the NAV Server but the same issue is prompting. I seek advise from PASI regarding this and they told me that this is a system limitation. The user should finish the process first before uploading again to avoid the error.Since the NAV is finishing the first process before proceeding to the next. PASI advised to just scheduled the uploading on POS2NAV to avoid this issue. This has been discussed to Sir Jess and Ms. Jen of Sales Audit.