Agent handling the answer - By default, agents handling answer messages use the priority information stored with the transaction state to determine the priority of relaying the answer message. However, priority information included in the answer message, when present, is used in place of the stored priority information. The use of priority information implies that answers for higher priority transactions are given preferential treatment to lower priority transactions. When forwarding the answer messages, agents generally do not modify the priority information present in the received answer messages nor include the priority information when absent in the received answer messages. However, in some scenarios, agents can modify the priority information, for example, edge agents modifying the priority values set by an adjacent operator. There might be other scenarios where a Diameter endpoint does not support the DRMP mechanism and agents insert the priority information for that non-supporting endpoint.