This counts instances where the DXI2 command or response field in a received frame was invalid, one more granular DXI2 header-integrity check among the family of DXI2 validation counters. An admin isolates which specific DXI2 field is failing by comparing this counter against its siblings for link ID, station ID, address extension, and control field, narrowing down exactly what part of the CPE's DXI2 implementation is malformed. For example, an increment isolated to lportSmdsCntDxi2CrInvalids while the other DXI2 field counters stay at zero points specifically to how the CPE is setting the command or response bit, a much narrower troubleshooting target than a generic DXI2-errors alert would give.