InfluxDB Cloud has introduced a new feature that makes it easier to know when data is rejected due to invalid syntax or other errors. When writing data to InfluxDB Cloud using the command-line influx tool, if there are any issues with the syntax, an error message will be returned, along with information about which point was rejected and why. The rejected points are written to a bucket in the _monitoring bucket under the rejected_points measurement, which provides detailed information including the reason for rejection and the number of rejected points. This feature helps users identify and troubleshoot issues with their data more efficiently. Additionally, the article discusses the importance of line-protocol syntax and has introduced a new formal definition document to clarify areas where different implementations or documentation disagreed previously.