Control File: invalid package priority
The priority of a package defines the importance of the package in your distribution. Some packages, such as wpkg, will be marked as required. Other packages are optional. The priority is a limited set of words that the packager checks. If an invalid word is used, then an error is generated.
VALIDPriority: required
Priority: standard
INVALIDPriority: stnd5
Priority: 1
Priority: Yes