The present invention relates to a method and a system for capping incoming transactions in inbound stateful conversations established between a client and a plurality of conversation servers of a service integrator. For each client, a group of conversation servers is allocated to handle the inbound stateful conversations initiated. Each conversation server in the group broadcasts a local traffic value periodically to the other conversation servers in the group. Each conversation server in the group calculates a transaction capping limit based on a client global transaction capping limit and the broadcasted local traffic values from the other conversation servers in the group. Each conversation server limits the rate of incoming transactions received by the client when exceeding the local transaction capping limit.