Methods and systems for data validation in a client-server environment

Methods and systems are provided for dynamically generating validation rules. In certain implementations, state information related to one or more operations is stored. A request for validation rules is received from a client. The request may include one or more parameters and an identification of an operation to be performed. In response to the request, the state information is accessed for the operation to be performed. The validation rules are then dynamically generated based on the accessed state information and at least one of the parameters or the identification in the request. The validation rules can then be transmitted to the client.