Why does the PCIe core send Unsupported Request completion message to my first good MRD request? - Why does the PCIe core send Unsupported Request completion message to my first good MRD request? Description If bit 1 of the PCI ® Command Register (Memory Space Access Enable) in the Configuration Space is not set, the PCIe core responds to the first good MRd request with a Completion with Unsupported Request status. To fix this issue, please set Memory Space Access Enable bit of the PCIe Command Register to one. Related Articles Why does the PCIe core return Unsupported Request for Type0 Configuration Read request? Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Arria® II GX FPGA', 'Stratix® IV GT FPGA', 'Stratix® IV GX FPGA'] ['novalue'] ['novalue'] ['novalue']