We have several rules in router to validate HL7 messages, each rule check a particular field in HL7 message and send back response.  We want to run all rules and combine the rules responses into some variable/object and at the end if variable/object is empty it means message is valid, else send the value from this variable/object. This way one message we dont run it again and again, and we can send one message and response will give us combine results from all rules. 

For example,

Rule 1 - Check MSH.12 field, Send response "MSH.12 value not valid", and RETURN

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