error : Cyclone V XCVR Illegal constraint of Channel PLL

Hi All,

As you can see the attachement "xcvr_pin_planner", I'm using 4 transceivers in the cyclcone V ST FPGA.

I use only one "Transceiver reconfiguration controller" configured for 8 reconfiguration interfaces (grouping option = 2,2,2,2).

With this configuration i have this error (with quartus 14.1 and 15.1) :

Error (14566): Could not place 1 periphery component(s) due to conflicts with existing constraints (1 Channel PLL(s))
Error (175020): Illegal constraint of Channel PLL that is part of Cyclone V Transceiver Native PHY altera_xcvr_native_av to the region (0, 40) to (0, 42): no valid locations in region
Info (175028): The Channel PLL name(s): sFPDP_CONTROLLER:inst_sfpdp_controller4|sFPDP_XCVR:CMP_sFPDP_XCVR|sFPDP_PHY:CMP_sFPDP_PHY|altera_xcvr_native_av:sfpdp_phy_inst|av_xcvr_native:gen_native_inst.av_xcvr_native_insts.gen_bonded_group_native.av_xcvr_native_inst|av_pma:inst_av_pma|av_rx_pma:av_rx_pma|rx_pmas.rx_pma.rx_cdr
Info (175015): The I/O pad iSFPDP_XCVR_RX3 is constrained to the location PIN_L2 due to: User Location Constraints (PIN_L2)
Info (14709): The constrained I/O pad is contained within a pin, which is contained within a Receiver channel, which contains this Channel PLL
Error (178014): Partition assignments may be preventing transceiver placement - transceivers optimizations across partitions are not supported in this version of the Quartus II software. For more information, refer to the Release Notes.

If i remove CH1 (see attachement), I no longer have this problem