Details

This message is generated when the polynomials shown in the message are expected to be polynomials with coefficients that are integers or rational numbers.
The polynomials reported in the message will sometimes be derived in a non-trivial way from the input.
Off[message] switches off the message; On[message] switches it on. For example: Off[General::npolys].

Examples

One of the coefficients in the input is not a rational number:

This shows valid input in Factor:

Top