diff --git a/dev-itpro/developer/diagnostics/diagnostic-al190.md b/dev-itpro/developer/diagnostics/diagnostic-al190.md
index 8b30da8631..7b9fb1650a 100644
--- a/dev-itpro/developer/diagnostics/diagnostic-al190.md
+++ b/dev-itpro/developer/diagnostics/diagnostic-al190.md
@@ -14,10 +14,10 @@ ms.reviewer: solsen
 
 [!INCLUDE[banner_preview](../includes/banner_preview.md)]
 
-Constant value '{0}' is outside the range for a Time.
+Constant value '{0}' is outside the range for a Time. The syntax for defining Time format is `hhmmssT`, where `T` is a mandatory letter. For example, `134530T`, read as 13:45:30 or 1:45:30pm.
 
 
 [//]: # (IMPORTANT: END>DO_NOT_EDIT)
 ## See Also  
 [Get Started with AL](../devenv-get-started.md)  
-[Developing Extensions](../devenv-dev-overview.md)  
\ No newline at end of file
+[Developing Extensions](../devenv-dev-overview.md)