What does the Bitrix installer in MySQL not like?

Question

MySQL

Good afternoon, I turn to MySQL experts
during the installation process, such an error got out, a feeling of some kind of incompatibility of the entered data,
as you think. what could it be

Answer 1

duplicate entry.
An attempt to write a string when there is already one by a unique key.
Was the database empty before installation? If yes, kick Bitrix support.

Answer 2

Clear the database completely and try again.