AT command unknown in the arduino IDE environment

[settala1]

Describe your question or issue A clear and concise description of the problem you're facing and what you'd like help with. TINY_GSM_MODEM_SIM800 Library one of it's AT commands have been denied in the binary configuration environment "they say it's an undefined character. how can we go about it' AT+CBC, Inquire charging status and remaining battery capacity.(it's the AT command needed to be defined) Environment Arduino IDE This information is all important; it's hard to help without a complete set of answers.

• Version of Fimrware being used: Rev C
• Version of Arduino IDE being used:Arduino 1.8.20

[Baalmart]

Thanks @settala1 , I guess the rest here are better placed to assist. @deogratius2phantom @semajoel @NsubugaAnold