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3154508 - Receiver REST adapter call fails with java.lang.RuntimeException: java.net.MalformedURLException: no protocol: ../login?return_url=

Symptom

Message processing fails with below error in REST receiver adapter while calling endpoint:

com.sap.engine.interfaces.messaging.api.exception.MessagingException: java.lang.RuntimeException: java.net.MalformedURLException: no protocol: ../login?return_url=<path_of_endpoint_url>

Message processing failed. Cause: java.lang.RuntimeException: java.net.MalformedURLException: no protocol: ../login?return_url=<path_of_endpoint_url>
Error while processing outbound message. java.net.MalformedURLException: no protocol: ../login?return_url=<path_of_endpoint_url>: no protocol: ../login?return_url=<path_of_endpoint_url>

The following HTTP communication can be seen in the HTTP Traces (See SAP Note: 1514898):

Open connection to <hostname>:<port>

HTTP_CLIENT : XXXX REQUEST: 

POST <path_of_endpoint_url> HTTP/1.1..Content-Type: application/json..User-Agent: SAP HttpClient vHost: <hostname>:<port>..Content-Length: 506....

HTTP_CLIENT : XXXX REPLY: 

HTTP/1.1 302 Unauthorized..Cache-Control: no-cache..Pragma: no-cache..Content-Length: 0..Expires: -1..Location: ../login?return_url=<path_of_endpoint_url>..Server: Microsoft-HTTPAPI/2.0..X-Content-Type-Options: nosniff..X-XSS-Protection: 1; mode=block..X-Frame-Options


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Environment

Above issue might be experienced on:

  • A newly implemented integration on a SAP Process Integration 7.50 SP17 or higher system,
  • An already well working scenario started to fail with this error after upgrading to SAP Process Integration 7.50 SP17 or higher system versions. 

Product

SAP NetWeaver all versions

Keywords

Process Integration, PI, Process Orchestration, PO, REST Adapter, Rest receiver, preemptive authentication, useAuthPreemptive, Authentication Preemptive, MalformedURLException: no protocol: ../login?return_url=
 , KBA , BC-XI-CON-RST , Rest Adapter , Problem

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