This enumerated value reports why a license validation failed: serial number mismatch between the license file and the gateway hardware, an invalid digital signature, a platform type mismatch (for example a license issued for a G250 being applied to a G350), or an invalid feature setting. An admin uses it, typically via the associated trap, to diagnose exactly why a newly applied license was rejected. For example, a value of lntPlatformTypeMismatch(3) tells the admin they applied a license file meant for a different hardware model.