Method, parser, messaging system, computer program and computer program product for handling context information associated with a message flow in a messaging system, the message flow having processing nodes for processing the message. A request is received at the parser to perform a first operation associated with the message. An indication of the context information to retrieve from a context store is obtained. This context information is for use by at least one of the processing nodes in the message flow for determining how to process the message. The context information is retrieved from the context store and a logical representation of the context information is then created in a format accessible by at least one processing node in the message flow.