Jeff,
A little background on the issue;
* There are 12 register terminals.
* There are 9 back-office computers with RMS installed; 2 with POS active
* This issue is not unique to just 2 registers and can occur with any combination of 2 registers.
* The issue (technical error when settling credit cards) presented itself for the 1st time on ~7/3/16.
-> This issue is bandaided by manually fixing the RTSN's to unique ones.
* Every terminal shares the EDC PAC Terminal Number of "1111"
* Every terminal was replaced on 3/19/16
* 1st time duplicate RTSN's duplicated on clean install: 3/25/16
* 1st time in EDC Record with duplicated RTSN's: 8/18/08 (original install)
Unrelated (?) Issue:
* One register opens its own batch periodically throughout the day; this issue 1st presented itself on 3/26/16 (day after replacing terminals). Uninstalling / Reinstalling / Updating RMS had no effect on this issue.
I believe something changed when Mercury swapped to Vantiv; Vantiv is telling me nothing has changed on their end. Vantiv has confirmed they made changes to their configuration on 7/3/16; but says there is no way it is related.