In SAS9, which statement about user-defined format names is not true?

The statement regarding user-defined format names that is not true is that the format name can be up to 200 characters in length. In SAS, while creating user-defined formats, the format names are subject to certain constraints. Specifically, format names are limited to a maximum length of 32 characters. This rule is in place to maintain compatibility and ensure that the names are manageable within the SAS environment.

Regarding other statements, user-defined format names indeed cannot end in a number, must not end with a period, and cannot have the same name as an existing SAS format. These restrictions are intended to avoid confusion and ensure that custom formats can be clearly distinguished from built-in SAS formats. Therefore, the assertion that user-defined format names can be up to 200 characters long stands out as inaccurate.