Abstract: The present description refers in particular to a computer implemented method, computer program product, and computer system for dynamic separation of duties (SoD) during workflow execution. Based on at least one policy file, at a monitoring module, at least one node to be logged from a message in a message pipe of one or more messages exchanged when executing a workflow instance may be specified. Information on the at least one logged node may be passed to an enforcer. SoD violation for the at least one logged node may be checked at the enforcer. If, for the at least one logged node, SoD is violated, action may be taken based on the at least one policy file.