(Optional) The identifier of the package, assigned by the BlackBerry Signing Authority server when started
The <packageId> element specifies the identifier of the package, assigned by the BlackBerry Signing Authority server. If you don't provide a value, one it is generated for you by the BlackBerry Signing Authority server using the <versionNumber> and <authorId> elements. The element allows you to use the same identifier for signed and unsigned applications. The application must be signed at least once to determine the final value.
A PCDATA value representing the package identifier.