A method for ensuring payload validity for communications on an asynchronous channel based bus. A consumer provides to a channel of an asynchronous channel based bus, a request message that includes a request for data. A producer monitoring the channel receives the request message. The producer generates a response message to the request message. The response message includes a schema and a payload. The producer provides, to the channel of the asynchronous channel based bus, the response message. The consumer receives the response message and performs a runtime validation of the schema of the response message. The consumer allows the response message to be utilized when the response message passes the runtime validation.