Provide test for transport request create rfc fails

src/com/sap/piper/cm/ChangeManagement.groovy

@@ -114,6 +114,8 @@ public class ChangeManagement implements Serializable {
             "--env TRANSPORT_DESCRIPTION=${description}",
             "--env ABAP_DEVELOPMENT_CLIENT=${client}"]
 
+        try {
+
             def transportRequestId = executeWithCredentials(
                 BackendType.RFC,
                 dockerImage,
@@ -125,6 +127,11 @@ public class ChangeManagement implements Serializable {
                 true)
 
             return new JsonSlurper().parseText(transportRequestId).REQUESTID
+
+        } catch(AbortException ex) {
+            throw new ChangeManagementException(
+                "Cannot create transport request: ${ex.getMessage()}", ex)
+        }
     }
 
     void uploadFileToTransportRequestSOLMAN(

test/groovy/com/sap/piper/cm/ChangeManagementTest.groovy

@@ -199,6 +199,25 @@ public void testGetCommandLineWithCMClientOpts() {
 
     }
 
+    @Test
+    public void testCreateTransportRequestRFCFails() {
+
+        thrown.expect(ChangeManagementException)
+        thrown.expectMessage('Cannot create transport request: script returned exit code 3')
+
+        script.setReturnValue('cts createTransportRequest',
+            { throw new AbortException('script returned exit code 3')})
+
+        def transportRequestId = new ChangeManagement(nullScript).createTransportRequestRFC(
+            'rfc', // docker image
+            [], // docker options
+            'https://example.org/rfc', // endpoint
+            '01', // client
+            'me', // credentialsId
+            'Lorem ipsum' // description
+        )
+    }
+
     @Test
     public void testCreateTransportRequestCTSSucceeds() {