diff --git a/docs/software-developer-documentation/server-side-extensions/as-api-listener.md b/docs/software-developer-documentation/server-side-extensions/as-api-listener.md
index 0c66bc7154ad51f94ca2e57e3ebe97cb6954a8b6..7fc6a01423786612ceabf0712affe02b6a570899 100644
--- a/docs/software-developer-documentation/server-side-extensions/as-api-listener.md
+++ b/docs/software-developer-documentation/server-side-extensions/as-api-listener.md
@@ -58,7 +58,10 @@ is provided with the V3 API jar and provides 3 methods:
     session token used for the operation, the operation result and any
     exception that happened during the operation.
 
-  
+
+| :warning: Implicit Requirements |
+|:---------------------------|
+| **Requirement 1:  The Listener should be Thread Safe Code**<br /><br />A single instance of the Listener is created during the server startup.<br /><br />Since a single instance is used to serve all requests thread safe code is a requirement.<br /><br />We strongly suggest to not to keep any state.<br /><br />**Requirement 2: The Listener should not throw Exceptions**<br /><br />If the listener throw an exception it will make the API call fail.<br /><br />**Requirement 3: The Listener should use IOperation and IOperationResult as indicated below**<br /><br />All API Operations go through every listener so the method signatures should use IOperation and IOperationResult.<br /><br />Please use instanceof for safe casting. |
 
 Implicit Requirements