Because XDC constraints are applied
sequentially, and are prioritized based on clear precedence rules, you must review the
order of your constraints carefully. For more information, see XDC Precedence.
Note: If multiple physical constraints are conflicting, the latest
constraint wins. For example, if an I/O port gets assigned a different location
(LOC) through multiple XDC files, the latest location assigned to the port takes
precedence.
The Vivado IDE provides full visibility into your design. To validate your constraints step by step:
- Run the appropriate report commands.
- Review the messages in the Tcl Console or the Messages window.