ID:15031 PLL "<name>" has parameter <name> with illegal value <number> -- value must be one of the <number> legal values

CAUSE: The specified PLL has the specified illegal value for the specified parameter. The value for the specified parameter must be one of the specified legal values.

ACTION: Specify a legal value for the specified parameter. If you are using an EDA tool, contact the technical support for the EDA tool regarding this message. For further assistance contact Intel Technical Support by creating a Service Request at www.altera.com/mysupport.