As long as the 4-month deadline for replying to the Office Action Notice has not passed, you can amend your claims, but if the examiner has already issued a second Office Action Notice. Your corrections will be useless. Just make them when you reply to the second communication, and your application will not be rejected directly. You can also just call the examiner directly and say that you need to make corrections and ask him if he can do it. I think as long as he hasn't started to continue the review, it should be okay.
It refers to the five situations that are clearly pointed out in the examination guideline that are not in compliance with Article 51, paragraph 3, of the Implementing Rules of the Patent Law. In those five situations, the examiner will not accept your revised text. Those five situations are when you take the initiative to expand the scope of protection, add new independent claims, etc. I think what you want to ask about is to correct mistakes, such as too many claims and unclear claims, etc. These are defects that should be overcome. If your patent has the prospect of authorization, in this case, even if the examiner If you do not point out this flaw, you can also take the initiative to correct it, and the reviewer will accept the revised text. This is clearly stipulated in the review guidelines.