在进行后仿时,对SDF进行编译的过程中,出现告警:ncelab: *W,SDFNET: Failed Attempt to annotate to non-existent timing check (RECOVERY (posedge RN) (posedge CK) (-0.124)) of instance xxxxx_ of module SDFFRHQX8HS <.\xxxxxx.sdf, line 1519575>.请问什么原因导致这一问题?(已经排除SDF与仿真库的不一致)。再者,这一问题如果不修复,会不会影响到后仿的正确性?