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AR# 42087

13.x Constraint System/NGDBuild - "WARNING:ConstraintSystem:3:... This constraint will be ignored..."


The following warning is highlighted in NGDBuild:

"WARNING:ConstraintSystem:3 - Constraint <TIMESPEC "TS_TEST" = FROM "TNM_SRC" TO "TNM_DST "TS_clk" * 4;> [system.ucf(#)]: This constraint will be ignored because the relative clock constraint named 'TS_clk' was not found."

What is the reason for this message?


This message highlights that the UCF file is missing a timespec required for the FROM-To constraint.
AR# 42087
Date Created 10/07/2011
Last Updated 12/15/2012
Status Active
Type General Article
  • ISE Design Suite - 13
  • ISE Design Suite - 13.1
  • ISE Design Suite - 13.2
  • ISE Design Suite - 13.3