Importing User objects using csv failed with error message
today, I wanted to import some users again, as I did already a couple of times. The first 3 test runs "Synchronize Now" were to eliminate any wrong characters or other typo mistakes. When the log didn't mention any more errors, I removed the test mode of the connector and synchronized again, but didn't check the log file directly afterwards. After a while I figured out that about half of the objects from the csv were missing in the database. In the log file, I found an error twice, once in approx. the middle of all the 369 lines, the other one at the end.
Error - could not commit final batch - Invalid high surrogate character (0xDFCD). A high surrogate character must have a value from range (0xD800 - 0xDBFF).
Does anybody of you know this error? I've checked the csv multiple times, but cannot seem to find an unusual character or anything else. I'm a bit lost. I've split the csv to contain only the missing objects, but again same error twice in the log file. Of course, we do have some uncommon characters like the o or a with the dots on it or some french characters, but I wouldn't think of them causing the error. Some of the objects that were imported have these characters in their names.
Any other idea where or what to look for? I still have 170 objects to import and it's far too many to do them manually. I've never had any issues with the import. We still use SCSM 2012 R2 UR9, workflow engine is 220.127.116.11. Thanks.