# How Can I Check the BMS Monitoring Status?

The BMS monitoring software is installed in the /usr/local/telescope directory. Logs are in the /usr/local/telescope/log/ directory, in which ces.log is the data log and common.log is the run log.

- If data is not sent successfully and 403 or 401 is returned, check whether AccessKey and SecretKey are specified correctly.
- If data is not sent successfully and 500 or other codes are returned, contact the customer service.

Parent topic: Instance FAQ