The following warning message is reported during guided mapping:
"WARNING:Pack:705 - All frags in guide NCD slice cor.i_b2s/rtime_fifo.mcell_chk_snt.data_in1(0) matched - but unable to recreate packing for the guide slice."
What does this mean?
This message is an indication that the guide matched up logic with the original design that was originally packed into a slice, but that the pack is no longer possible. The most likely reason for this to occur is that mapping constraint or design changes have now made the pack impossible.
This warning message can be safely ignored, unless you feel that the specified slice should be packed the same as the guide design. In that case, design changes should be reviewed to determine how they affect this slice.