please note; please be aware; please understand
A polite set phrase used in announcements, notices, customer communication, and business writing to ask the reader to accept or understand a situation, often one that may inconvenience them.
Please note that we will be temporarily closed tomorrow.
ご返信にお時間をいただく場合がございます。ご了承ください。
Please understand that it may take us some time to reply.
Common modern spelling; ください is often written in kana in this fixed polite expression.
Common alternative using 下さい in kanji; often seen in notices and business writing.
Formed from honorific ご, 了承 meaning acknowledgement, acceptance, or understanding, and ください, the polite request form of くださる. The phrase functions as a fixed polite request: 'please acknowledge/understand.'