2017-04-12 09:17:28 /THREAD(19) Web file not found: 203.188.197.111:25
...
2017-04-14 02:20:46 /THREAD(19) Web file not found: http:/httpheader.net/
2017-04-14 08:19:02 /THREAD(18) Web file not found: http:/www.17track.net/restapi/handlertest.ashx
Hi, Paul.
Sounds like you're talking about REST API. And that your are overwriting data with older values if B managed to read record before A finished to update it. Classic conflict resolution ...