Accessing the Enterprise Gateway 9.11 VIP SSP My VIP, or VIP Manager IDP from a Load Balancer, proxy or other network device fails with error 400, reason: Line Folding Not Supported.
The version of Jetty in VIP EG 9.11 has been upgraded to comply with RFC7230 and is not backward compatible with RFC2616 in previous VIP EG versions.
Update your application to support RFC7230.