Did he say that he did not create records of other conversations? A lot of people take notes on conversations. It is not always easy to remember what you or others said in a meeting.I don't like the whole idea of memos written about conversations. The only reason I have heard of someone doing this is in an attempt to use the conversations against someone else because they don't like them. The fact that he had never bothered to create a record of his dealings with anyone else shows that he has a clear bias against Trump. This calls in to question the validity of his testimony.
Also Kut we both know that these type of reports done afterwords can easily be slanted to make the person writing them look better Than they should.