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MySQL error code

MySQL error 3104

MySQL server error 3104 is ER_WRONG_FK_OPTION_FOR_GENERATED_COLUMN, reported with SQLSTATE HY000.

Cannot define foreign key with %s clause on a generated column.
Error3104
NameER_WRONG_FK_OPTION_FOR_GENERATED_COLUMN
SQLSTATEHY000
GroupServer errors

Source: MySQL 8.4 Error Reference