Vivado Error Dictionary
Fig: Locating an error, diagnosing the cause, and fixing it entry by entry
The Vivado Error Dictionary collects common errors and warnings, explaining causes and suggesting fixes. High-frequency examples below.
High-frequency errors
| Example | Common cause | Suggested fix |
|---|---|---|
| [Place 30-574] placement/resource failure | Pin constraints conflict or dense logic | Check constraints, adjust strategy, simplify logic |
| [Synth 8-3331] undeclared signal/width mismatch | Missing declaration | Add declaration, check width |
| Timing violation (negative WNS) | Long path or loose constraints | Pipeline, tighten constraints, simplify logic |
| [DRC 23-20] pin assignment conflict | Duplicated constraints | Consolidate constraint files |
Error Debug Loop
Read the Vivado message number to tell whether it comes from synthesis, place-and-route or DRC, use this dictionary to find the cause (constraint conflict, missing code, long paths), fix and re-implement until errors clear.
Fig: Debug loop from an error message back to a clean build
Interactive version is under construction; this page is a functional overview with example data for demonstration only.