You are assigning sensor group tags during installation.

The combined maximum length of all sensor grouping tags is 256 characters , including comma separators. Grouping tags are assigned during installation using the appropriate installer parameter and can later be used in Host Management and dynamic host group rules. Because multiple tags can be applied to a host, Falcon enforces a combined-length limit across all tags rather than only a per-tag limit in this context. Exceeding this value can cause installation or tagging behavior to fail or produce incomplete tag assignment. The other choices are not the documented maximum. CCFA sensor deployment guidance specifically states that when using multiple tags, the combined length of all tags for a host, including comma separators, cannot exceed 256 characters.