Here the IABot adds a wrong parameter archive-datum (which has to be archiv-datum) and also an invalid date (should be YYYY-MM-DD or similar):
{{Webarchiv|text=Archivlink |url=http://www.zim.mpg.de/openaccess-berlin/berlin_declaration.pdf |archiv-url=http://webarchive.loc.gov/all/20110512032144/http%3A//www.zim.mpg.de/openaccess%2Dberlin/berlin_declaration.pdf |archive-datum=1305170504 |archiv-bot=2018-04-18 09:57:13 InternetArchiveBot }}
Same problem here:
{{Webarchiv|text=Irad |url=http://www.irad-cameroon.org/zones_fr.php?idz=5 |archiv-url=http://archive.wikiwix.com/cache/20110428101539/http://www.irad-cameroon.org/zones_fr.php?idz=5 |archive-datum=1303978539 |archiv-bot=2018-04-18 14:30:57 InternetArchiveBot }}
I will take care of those cases while cleaning up {{Webarchiv}} usages with ''archiv-url'' parameters, but the bot's configuration should be changed as soon as possible.
I have paused the bot for now.