I have an MPG configured on my xi50 running v5. Use an external load balancer and am trying to get a SOAP monitor working. Can see the health check message being sent and received by Datapower but it fails I think due to an SOAP 1.1 message with a blank SOAPAction header, i.e the header is there but no value. Previously I had the same issue with a WSP and use the SOAPAction Policy to switch from Lax to Off and this solved the problem, but I see no similar way to set this in the MPG if it is indeed possible. I have the MPG set to expect SOAP so errors send the correct status code so don't want to go down route of changing this to XML.