The Messages window displays the results of the compilation and flags irregularities in the RTL source files under the Elaborated Design section.
You can filter the Messages window to display errors or warnings or informational messages from the results of RTL elaboration. To enable or disable the display of Errors, Critical Warnings, Warnings, or Informational messages, select a check box in the banner of the Messages window.
You can select any of the warning or error messages in the Messages window to load the corresponding RTL source file with the selected source code highlighted in the Vivado IDE Text Editor.
Figure 1. Elaborated Design Messages