Which of the following about balloon attachments in SolidWorks is incorrect?

Balloons in SolidWorks are used to reference parts or assemblies in engineering drawings, typically as part of a bill of materials (BOM) process. The statement claiming that balloons must have an arrow connection to a face is incorrect because balloons can actually be used in various ways.

In SolidWorks, balloons can be freely positioned anywhere on the drawing without necessarily having to connect with an arrow to a part face. While they often include an arrow that points to a component, it is not a requirement for their placement or function; this flexibility allows users to better organize their drawings and improve clarity.

Additionally, it is entirely possible for balloons to "float" without needing to directly connect to any specific part or face; their main role is to associate with the BOM, providing information regarding part numbers or descriptions. Furthermore, balloons can also be linked with a line to indicate the relationship between the balloon and the part/assembly, but this isn't a strict requirement either.