HYPER_RETIMER Error

Yes correct, It has to be FLOW_ENABLE_HYPER_RETIMER_FAST_FORWARD.

I tried to enable and disable HYPER_RETIMER using GUI, but till it gives same error.

The error is inside a .sdc of DDR3 controller in qsys block.

Error (332000): ERROR: Assignment HYPER_RETIMER has multiple values. Use the "get_all_global_assignments" command to get all values or use the "get_global_assignment -front" command to get the first value.

while executing

"get_global_assignment -name "HYPER_RETIMER""

(procedure "altera_emif_arch_nf_160_pktenta_get_ddr..." line 9)

invoked from within

"altera_emif_arch_nf_160_pktenta_get_ddr_pins $instname allpins var"

(procedure "altera_emif_arch_nf_160_pktenta_initial..." line 15)

invoked from within

"altera_emif_arch_nf_160_pktenta_initialize_ddr_db altera_emif_arch_nf_160_pktenta_ddr_db var"

invoked from within

"if { ! [ info exists altera_emif_arch_nf_160_pktenta_sdc_cache ] } {

altera_emif_arch_nf_160_pktenta_init..."

(file "../altera_emif_arch_nf_160/synth/altera_emif_arch_nf_160_pktenta.sdc" line 122)

And, I'm using Arria 10 FPGA