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AR# 31752

10.1 NGDBUILD - "WARNING:ConstraintSystem:85 -Constraint %s: This constraint will be ignored because %s could not be found"

Description

Why is the following warning issued?

"WARNING:ConstraintSystem:85 -Constraint %s: This constraint will be ignored because %s could not be found.

Constraint !%1!: This constraint will be ignored because !%2! could not be found."

Solution

This warning is issued because the signal or net cannot be found in the design.

To resolve this issue. make sure that correct hierarchy for the signal is used in the constraint and that the signal is not optimized out of the design during synthesis.

For example, if the signal is a lower-level module, you will need to use the full hierarchical name in the constraint such as:

top/module/<signal name>

AR# 31752
Date Created 10/07/2008
Last Updated 12/15/2012
Status Active
Type General Article