diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog for instana-haskell-trace-sdk
 
+## 0.6.2.0
+- Fix: Ignore incoming X-INSTANA-T/-S if website monitoring correlation data is present.
+- Add support for X-INSTANA-SYNTHETIC
+
 ## 0.6.1.0
 - Fix: Capture HTTP status code in `postProcessHttpRespons` even if an the currently active span is an exit.
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -65,8 +65,7 @@
     * `instana-haskell-trace-sdk.cabal`
     * `package.yaml`
     * `test/integration/Instana/SDK/IntegrationTest/Metrics.hs` (assertion for `sensorVersion`)
-* Update `README.md` with API changes.
-* Update `CHANGELOG.md` (update/add entry)
+* Update `README.md` with API changes (if any).
 * Commit and push this change with a commit comment like `chore: version a.b.c.d`
 * Wait for the CI build for branch main.
 * Build the package with stack and upload it to Hackage:
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@
 
 ```
 extra-deps:
-- instana-haskell-trace-sdk-0.6.1.0
+- instana-haskell-trace-sdk-0.6.2.0
 ```
 
 Depending on the stack resolver you use, you might also need to add `aeson-extra` to your extra-deps:
diff --git a/instana-haskell-trace-sdk.cabal b/instana-haskell-trace-sdk.cabal
--- a/instana-haskell-trace-sdk.cabal
+++ b/instana-haskell-trace-sdk.cabal
@@ -1,5 +1,5 @@
 name:           instana-haskell-trace-sdk
-version:        0.6.1.0
+version:        0.6.2.0
 synopsis:       SDK for adding custom Instana tracing support to Haskell applications.
 description:    Please also see the README on Github at <https://github.com/instana/haskell-trace-sdk#readme>
 homepage:       https://www.instana.com/
diff --git a/src/Instana/SDK/Internal/WireSpan.hs b/src/Instana/SDK/Internal/WireSpan.hs
--- a/src/Instana/SDK/Internal/WireSpan.hs
+++ b/src/Instana/SDK/Internal/WireSpan.hs
@@ -99,6 +99,7 @@
   , serviceName     :: Maybe Text
   , correlationType :: Maybe Text
   , correlationId   :: Maybe Text
+  , synthetic       :: Maybe Bool
   , spanData        :: Value
   } deriving (Eq, Generic, Show)
 
@@ -141,6 +142,7 @@
       , "ec"    .= errorCount span_
       , "crtp"  .= correlationType span_
       , "crid"  .= correlationId span_
+      , "sy"    .= synthetic span_
       , "data"  .= spanData_
       , "f"     .= From pid_ agentUuid_
       ]
diff --git a/src/Instana/SDK/Internal/Worker.hs b/src/Instana/SDK/Internal/Worker.hs
--- a/src/Instana/SDK/Internal/Worker.hs
+++ b/src/Instana/SDK/Internal/Worker.hs
@@ -139,6 +139,8 @@
       , WireSpan.serviceName     = EntrySpan.serviceName entrySpan
       , WireSpan.correlationType = EntrySpan.correlationType entrySpan
       , WireSpan.correlationId   = EntrySpan.correlationId entrySpan
+      , WireSpan.synthetic       =
+          if EntrySpan.synthetic entrySpan then Just True else Nothing
       , WireSpan.spanData        = EntrySpan.spanData entrySpan
       }
 
@@ -162,6 +164,7 @@
       , WireSpan.serviceName     = ExitSpan.serviceName exitSpan
       , WireSpan.correlationType = Nothing
       , WireSpan.correlationId   = Nothing
+      , WireSpan.synthetic       = Nothing
       , WireSpan.spanData        = ExitSpan.spanData exitSpan
       }
 
diff --git a/src/Instana/SDK/SDK.hs b/src/Instana/SDK/SDK.hs
--- a/src/Instana/SDK/SDK.hs
+++ b/src/Instana/SDK/SDK.hs
@@ -42,6 +42,7 @@
     , setCorrelationId
     , setCorrelationType
     , setServiceName
+    , setSynthetic
     , startEntry
     , startExit
     , startHttpEntry
@@ -313,12 +314,20 @@
     tracingHeaders = readHttpTracingHeaders request
     traceId = TracingHeaders.traceId tracingHeaders
     spanId = TracingHeaders.spanId tracingHeaders
+    synthetic = TracingHeaders.synthetic tracingHeaders
     level = TracingHeaders.level tracingHeaders
+    (traceId', spanId') =
+      case TracingHeaders.correlationId tracingHeaders of
+        Nothing ->
+          (traceId, spanId)
+        Just _ ->
+          (Nothing, Nothing)
+
   case level of
     TracingHeaders.Trace -> do
       let
-        io' = addDataFromRequest context request io
-      case (traceId, spanId) of
+        io' = addDataFromRequest context request synthetic io
+      case (traceId', spanId') of
         (Just t, Just s) ->
           withEntry context t s spanType io'
         _                -> do
@@ -342,19 +351,31 @@
 
 -- |Takes an IO action and appends another side effecto to it that will add HTTP
 -- data from the given request to the current span.
-addDataFromRequest :: MonadIO m => InstanaContext -> Wai.Request -> m a -> m a
-addDataFromRequest context request originalIO =
-  originalIO >>= addHttpDataInIO context request
+addDataFromRequest ::
+  MonadIO m =>
+  InstanaContext ->
+  Wai.Request ->
+  Bool ->
+  m a ->
+  m a
+addDataFromRequest context request synthetic originalIO =
+  originalIO >>= addHttpDataInIO context request synthetic
 
 
-addHttpDataInIO :: MonadIO m => InstanaContext -> Wai.Request -> a -> m a
-addHttpDataInIO context request ioResult = do
-  addHttpData context request
+addHttpDataInIO ::
+  MonadIO m =>
+  InstanaContext ->
+  Wai.Request ->
+  Bool ->
+  a ->
+  m a
+addHttpDataInIO context request synthetic ioResult = do
+  addHttpData context request synthetic
   return ioResult
 
 
-addHttpData :: MonadIO m => InstanaContext -> Wai.Request -> m ()
-addHttpData context request = do
+addHttpData :: MonadIO m => InstanaContext -> Wai.Request -> Bool -> m ()
+addHttpData context request synthetic = do
   let
     host :: String
     host =
@@ -372,6 +393,7 @@
         ]
       ]
     )
+  setSynthetic context synthetic
 
 
 addCorrelationTypeAndIdToSpan ::
@@ -449,6 +471,7 @@
             , RootEntry.timestamp       = timestamp
             , RootEntry.errorCount      = 0
             , RootEntry.serviceName     = Nothing
+            , RootEntry.synthetic       = False
             , RootEntry.correlationType = Nothing
             , RootEntry.correlationId   = Nothing
             , RootEntry.spanData        = SpanType.initialData EntryKind spanType
@@ -490,6 +513,7 @@
             , NonRootEntry.timestamp   = timestamp
             , NonRootEntry.errorCount  = 0
             , NonRootEntry.serviceName = Nothing
+            , NonRootEntry.synthetic   = False
             , NonRootEntry.spanData    = SpanType.initialData EntryKind spanType
             }
     pushSpan
@@ -521,16 +545,25 @@
     tracingHeaders = readHttpTracingHeaders request
     traceId = TracingHeaders.traceId tracingHeaders
     spanId = TracingHeaders.spanId tracingHeaders
+    synthetic = TracingHeaders.synthetic tracingHeaders
     level = TracingHeaders.level tracingHeaders
+    -- ignore incoming X-INSTANA-T/-S if eum correlation data is present
+    (traceId', spanId') =
+      case TracingHeaders.correlationId tracingHeaders of
+        Nothing ->
+          (traceId, spanId)
+        Just _ ->
+          (Nothing, Nothing)
+
   case level of
     TracingHeaders.Trace ->
-      case (traceId, spanId) of
+      case (traceId', spanId') of
         (Just t, Just s) -> do
           startEntry context t s spanType
-          addHttpData context request
+          addHttpData context request synthetic
         _                -> do
           startRootEntry context spanType
-          addHttpData context request
+          addHttpData context request synthetic
           addCorrelationTypeAndIdToSpan context tracingHeaders $ return ()
 
     TracingHeaders.Suppress -> do
@@ -562,9 +595,9 @@
 -- capture incoming HTTP requests with 'withHttpEntry', which does
 -- both of these things automatically.
 --
--- Clients should make sure to call this in the context povided above, that is,
--- within 'withHttpEntry_ or between 'startHttpEntry' and 'completeHttpEntry'
--- but outside of blocks that create create an exit span, that is, outside of
+-- Clients should make sure to call this in the context provided above, that is,
+-- within 'withHttpEntry_' or between 'startHttpEntry' and 'completeHttpEntry'
+-- but outside of blocks that create an exit span, that is, outside of
 -- 'withExit', 'withHttpExit' and not between 'startExit' and 'completeExit'.
 postProcessHttpResponse ::
   MonadIO m =>
@@ -885,6 +918,14 @@
     (\span_ -> Span.setCorrelationId correlationId_ span_)
 
 
+-- |Set the synthetic flag. This should only be set on entry spans. It will be
+-- silently ignored for other types of spans.
+setSynthetic :: MonadIO m => InstanaContext -> Bool -> m ()
+setSynthetic context synthetic =
+  liftIO $ modifyCurrentSpan context
+    (\span_ -> Span.setSynthetic synthetic span_)
+
+
 -- |Adds additional custom tags to the currently active span. Call this
 -- between startEntry/startRootEntry/startExit and completeEntry/completeExit or
 -- inside the IO action given to with withEntry/withExit/withRootEntry.
@@ -1000,6 +1041,10 @@
       |> (<$>) BSC8.unpack
     (level, correlationType, correlationId) =
       TracingHeaders.parseXInstanaL xInstanaLValue
+    synthetic =
+      headers
+      |> List.lookup TracingHeaders.syntheticHeaderName
+      |> (<$>) BSC8.unpack
   in
   TracingHeaders
     { TracingHeaders.traceId = traceId
@@ -1007,6 +1052,7 @@
     , TracingHeaders.level = level
     , TracingHeaders.correlationType = correlationType
     , TracingHeaders.correlationId = correlationId
+    , TracingHeaders.synthetic = synthetic == (Just "1")
     }
 
 
diff --git a/src/Instana/SDK/Span/EntrySpan.hs b/src/Instana/SDK/Span/EntrySpan.hs
--- a/src/Instana/SDK/Span/EntrySpan.hs
+++ b/src/Instana/SDK/Span/EntrySpan.hs
@@ -15,9 +15,11 @@
   , setCorrelationId
   , setCorrelationType
   , setServiceName
+  , setSynthetic
   , spanData
   , spanId
   , spanName
+  , synthetic
   , timestamp
   , traceId
   ) where
@@ -153,6 +155,25 @@
       RootEntrySpan $ RootEntry.setCorrelationId correlationId_ entry
     NonRootEntrySpan _ ->
       entrySpan
+
+
+-- |The synthetic flag.
+synthetic :: EntrySpan -> Bool
+synthetic entrySpan =
+  case entrySpan of
+    RootEntrySpan entry    -> RootEntry.synthetic entry
+    NonRootEntrySpan entry -> NonRootEntry.synthetic entry
+
+
+-- |Set the synthetic flag. This should only be set on entry spans. It will be
+-- silently ignored for other types of spans.
+setSynthetic :: Bool -> EntrySpan -> EntrySpan
+setSynthetic synthetic_ entrySpan =
+  case entrySpan of
+    RootEntrySpan entry ->
+      RootEntrySpan $ RootEntry.setSynthetic synthetic_ entry
+    NonRootEntrySpan entry ->
+      NonRootEntrySpan $ NonRootEntry.setSynthetic synthetic_ entry
 
 
 -- |Optional additional span data.
diff --git a/src/Instana/SDK/Span/NonRootEntry.hs b/src/Instana/SDK/Span/NonRootEntry.hs
--- a/src/Instana/SDK/Span/NonRootEntry.hs
+++ b/src/Instana/SDK/Span/NonRootEntry.hs
@@ -8,6 +8,7 @@
   , addData
   , addToErrorCount
   , setServiceName
+  , setSynthetic
   ) where
 
 
@@ -39,6 +40,8 @@
     , errorCount  :: Int
       -- |An attribute for overriding the name of the service in Instana
     , serviceName :: Maybe Text
+      -- |A flag indicating that this span represents a synthetic call
+    , synthetic   :: Bool
       -- |Additional data for the span. Must be provided as an
       -- 'Data.Aeson.Value'.
     , spanData    :: Value
@@ -58,6 +61,12 @@
 setServiceName :: Text -> NonRootEntry -> NonRootEntry
 setServiceName serviceName_ nonRootEntry =
   nonRootEntry { serviceName = Just serviceName_ }
+
+
+-- |Set the synthetic flag.
+setSynthetic :: Bool -> NonRootEntry -> NonRootEntry
+setSynthetic synthetic_ nonRootEntry =
+  nonRootEntry { synthetic = synthetic_ }
 
 
 -- |Add a value to the span's data section.
diff --git a/src/Instana/SDK/Span/RootEntry.hs b/src/Instana/SDK/Span/RootEntry.hs
--- a/src/Instana/SDK/Span/RootEntry.hs
+++ b/src/Instana/SDK/Span/RootEntry.hs
@@ -12,6 +12,7 @@
   , setServiceName
   , setCorrelationType
   , setCorrelationId
+  , setSynthetic
   ) where
 
 
@@ -39,6 +40,8 @@
     , errorCount      :: Int
       -- |An attribute for overriding the name of the service in Instana
     , serviceName     :: Maybe Text
+      -- |A flag indicating that this span represents a synthetic call
+    , synthetic       :: Bool
       -- |The website monitoring correlation type
     , correlationType :: Maybe Text
       -- |The website monitoring correlation ID
@@ -72,6 +75,12 @@
 setServiceName :: Text -> RootEntry -> RootEntry
 setServiceName serviceName_ rootEntry =
   rootEntry { serviceName = Just serviceName_ }
+
+
+-- |Set the synthetic flag.
+setSynthetic :: Bool -> RootEntry -> RootEntry
+setSynthetic synthetic_ rootEntry =
+  rootEntry { synthetic = synthetic_ }
 
 
 -- |Set the website monitoring correlation type.
diff --git a/src/Instana/SDK/Span/Span.hs b/src/Instana/SDK/Span/Span.hs
--- a/src/Instana/SDK/Span/Span.hs
+++ b/src/Instana/SDK/Span/Span.hs
@@ -20,10 +20,12 @@
   , setCorrelationId
   , setCorrelationType
   , setServiceName
+  , setSynthetic
   , spanData
   , spanId
   , spanKind
   , spanName
+  , synthetic
   , timestamp
   , traceId
   ) where
@@ -179,6 +181,25 @@
   case span_ of
     Entry entry ->
       Entry $ EntrySpan.setCorrelationId correlationId_ entry
+    Exit _ ->
+      span_
+
+
+-- |The synthetic flag.
+synthetic :: Span -> Bool
+synthetic span_ =
+  case span_ of
+    Entry entry -> EntrySpan.synthetic entry
+    Exit _      -> False
+
+
+-- |Set the synthetic flag. This should only be set on entry spans. It will be
+-- silently ignored for other types of spans.
+setSynthetic :: Bool -> Span -> Span
+setSynthetic synthetic_ span_ =
+  case span_ of
+    Entry entry ->
+      Entry $ EntrySpan.setSynthetic synthetic_ entry
     Exit _ ->
       span_
 
diff --git a/src/Instana/SDK/TracingHeaders.hs b/src/Instana/SDK/TracingHeaders.hs
--- a/src/Instana/SDK/TracingHeaders.hs
+++ b/src/Instana/SDK/TracingHeaders.hs
@@ -11,6 +11,7 @@
   , parseXInstanaL
   , spanIdHeaderName
   , stringToTracingLevel
+  , syntheticHeaderName
   , traceIdHeaderName
   , tracingLevelToString
   ) where
@@ -36,6 +37,11 @@
 levelHeaderName = "X-INSTANA-L"
 
 
+-- |X-INSTANA-SYNTHETIC
+syntheticHeaderName :: HTTPHeader.HeaderName
+syntheticHeaderName = "X-INSTANA-SYNTHETIC"
+
+
 -- |Tracing level.
 data TracingLevel =
     -- |Record calls.
@@ -106,5 +112,7 @@
     , correlationType :: Maybe String
       -- |eum correlation ID
     , correlationId   :: Maybe String
+      -- |synthetic flag
+    , synthetic       :: Bool
     } deriving (Eq, Generic, Show)
 
diff --git a/test/integration/Instana/SDK/IntegrationTest/HttpTracing.hs b/test/integration/Instana/SDK/IntegrationTest/HttpTracing.hs
--- a/test/integration/Instana/SDK/IntegrationTest/HttpTracing.hs
+++ b/test/integration/Instana/SDK/IntegrationTest/HttpTracing.hs
@@ -2,11 +2,15 @@
 module Instana.SDK.IntegrationTest.HttpTracing
   ( shouldCreateRootEntryWithBracketApi
   , shouldAddWebsiteMonitoringCorrelationWithBracketApi
+  , shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithBracketApi
   , shouldCreateNonRootEntryWithBracketApi
+  , shouldSetSpanSyWithBracketApi
   , shouldSuppressWithBracketApi
   , shouldCreateRootEntryWithLowLevelApi
   , shouldAddWebsiteMonitoringCorrelationWithLowLevelApi
+  , shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithLowLevelApi
   , shouldCreateNonRootEntryWithLowLevelApi
+  , shouldSetSpanSyWithLowLevelApi
   , shouldSuppressWithLowLevelApi
   ) where
 
@@ -21,9 +25,9 @@
 import           Data.Maybe                             (isNothing, listToMaybe)
 import           Instana.SDK.AgentStub.TraceRequest     (From (..), Span)
 import qualified Instana.SDK.AgentStub.TraceRequest     as TraceRequest
-import qualified Instana.SDK.IntegrationTest.HttpHelper as HttpHelper
-import           Instana.SDK.IntegrationTest.HUnitExtra (applyLabel, applyLabel,
+import           Instana.SDK.IntegrationTest.HUnitExtra (applyLabel,
                                                          assertAllIO, failIO)
+import qualified Instana.SDK.IntegrationTest.HttpHelper as HttpHelper
 import qualified Instana.SDK.IntegrationTest.Suite      as Suite
 import qualified Instana.SDK.IntegrationTest.TestHelper as TestHelper
 import qualified Network.HTTP.Client                    as HTTP
@@ -38,7 +42,7 @@
     runBracketTest
       pid
       []
-      (applyConcat [rootEntryAsserts, bracketAsserts])
+      (applyConcat [rootEntryAsserts, bracketAsserts, notSyntheticAssert])
 
 
 shouldAddWebsiteMonitoringCorrelationWithBracketApi :: String -> IO Test
@@ -47,9 +51,31 @@
     runBracketTest
       pid
       [("X-INSTANA-L", "1,correlationType=web;correlationId=1234567890abcdef")]
-      (applyConcat [rootEntryAsserts, bracketAsserts, correlationAsserts])
+      (applyConcat [
+          rootEntryAsserts
+        , bracketAsserts
+        , correlationAsserts
+        , notSyntheticAssert
+      ])
 
 
+shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithBracketApi :: String -> IO Test
+shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithBracketApi pid =
+  applyLabel "shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithBracketApi" $
+    runBracketTest
+      pid
+      [ ("X-INSTANA-T", "test-trace-id")
+      , ("X-INSTANA-S", "test-span-id")
+      , ("X-INSTANA-L", "1,correlationType=web;correlationId=1234567890abcdef")
+      ]
+      (applyConcat [
+          rootEntryAsserts
+        , bracketAsserts
+        , correlationAsserts
+        , notSyntheticAssert
+      ])
+
+
 shouldCreateNonRootEntryWithBracketApi :: String -> IO Test
 shouldCreateNonRootEntryWithBracketApi pid =
   applyLabel "shouldCreateNonRootEntryWithBracketApi" $ do
@@ -58,9 +84,21 @@
       [ ("X-INSTANA-T", "test-trace-id")
       , ("X-INSTANA-S", "test-span-id")
       ]
-      (applyConcat [nonRootEntryAsserts, bracketAsserts])
+      (applyConcat [nonRootEntryAsserts, bracketAsserts, notSyntheticAssert])
 
 
+shouldSetSpanSyWithBracketApi :: String -> IO Test
+shouldSetSpanSyWithBracketApi pid =
+  applyLabel "shouldSetSpanSyWithBracketApi" $ do
+    runBracketTest
+      pid
+      [ ("X-INSTANA-T", "test-trace-id")
+      , ("X-INSTANA-S", "test-span-id")
+      , ("X-INSTANA-SYNTHETIC", "1")
+      ]
+      (applyConcat [nonRootEntryAsserts, bracketAsserts, syntheticAssert])
+
+
 shouldSuppressWithBracketApi :: IO Test
 shouldSuppressWithBracketApi =
   applyLabel "shouldSuppressWithBracketApi" $ do
@@ -73,7 +111,11 @@
     runLowLevelTest
       pid
       []
-      (applyConcat [rootEntryAsserts, lowLevelAsserts])
+      (applyConcat [
+          rootEntryAsserts
+        , lowLevelAsserts
+        , notSyntheticAssert
+      ])
 
 
 shouldAddWebsiteMonitoringCorrelationWithLowLevelApi :: String -> IO Test
@@ -82,9 +124,21 @@
     runLowLevelTest
       pid
       [("X-INSTANA-L", "1,correlationType=web;correlationId=1234567890abcdef")]
-      (applyConcat [rootEntryAsserts, lowLevelAsserts, correlationAsserts])
+      (applyConcat [rootEntryAsserts, lowLevelAsserts, correlationAsserts, notSyntheticAssert])
 
 
+shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithLowLevelApi :: String -> IO Test
+shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithLowLevelApi pid =
+  applyLabel "shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithLowLevelApi" $
+    runLowLevelTest
+      pid
+      [ ("X-INSTANA-T", "test-trace-id")
+      , ("X-INSTANA-S", "test-span-id")
+      , ("X-INSTANA-L", "1,correlationType=web;correlationId=1234567890abcdef")
+      ]
+      (applyConcat [rootEntryAsserts, lowLevelAsserts, correlationAsserts, notSyntheticAssert])
+
+
 shouldCreateNonRootEntryWithLowLevelApi :: String -> IO Test
 shouldCreateNonRootEntryWithLowLevelApi pid =
   applyLabel "shouldCreateNonRootEntryWithLowLevelApi" $ do
@@ -93,9 +147,25 @@
       [ ("X-INSTANA-T", "test-trace-id")
       , ("X-INSTANA-S", "test-span-id")
       ]
-      (applyConcat [nonRootEntryAsserts, lowLevelAsserts])
+      (applyConcat [
+          nonRootEntryAsserts
+        , lowLevelAsserts
+        , notSyntheticAssert
+      ])
 
 
+shouldSetSpanSyWithLowLevelApi :: String -> IO Test
+shouldSetSpanSyWithLowLevelApi pid =
+  applyLabel "shouldSetSpanSyWithLowLevelApi" $ do
+    runLowLevelTest
+      pid
+      [ ("X-INSTANA-T", "test-trace-id")
+      , ("X-INSTANA-S", "test-span-id")
+      , ("X-INSTANA-SYNTHETIC", "1")
+      ]
+      (applyConcat [nonRootEntryAsserts, lowLevelAsserts, syntheticAssert])
+
+
 shouldSuppressWithLowLevelApi :: IO Test
 shouldSuppressWithLowLevelApi =
   applyLabel "shouldSuppressWithLowLevelApi" $ do
@@ -312,6 +382,18 @@
       ]
     )
     (TraceRequest.spanData entrySpan)
+  ]
+
+
+syntheticAssert :: Span -> [Assertion]
+syntheticAssert span_ =
+  [ assertEqual "span.sy" (Just True) (TraceRequest.sy span_)
+  ]
+
+
+notSyntheticAssert :: Span -> [Assertion]
+notSyntheticAssert span_ =
+  [ assertEqual "span.sy" Nothing (TraceRequest.sy span_)
   ]
 
 
diff --git a/test/integration/Instana/SDK/IntegrationTest/Metrics.hs b/test/integration/Instana/SDK/IntegrationTest/Metrics.hs
--- a/test/integration/Instana/SDK/IntegrationTest/Metrics.hs
+++ b/test/integration/Instana/SDK/IntegrationTest/Metrics.hs
@@ -51,7 +51,7 @@
               (EntityDataRequest.arguments entityData)
           , assertLabelIs
               "sensorVersion"
-              "0.6.1.0"
+              "0.6.2.0"
               (EntityDataRequest.sensorVersion entityData)
           , assertCounterSatisfies
               "startTime"
diff --git a/test/integration/Instana/SDK/IntegrationTest/TestSuites.hs b/test/integration/Instana/SDK/IntegrationTest/TestSuites.hs
--- a/test/integration/Instana/SDK/IntegrationTest/TestSuites.hs
+++ b/test/integration/Instana/SDK/IntegrationTest/TestSuites.hs
@@ -124,12 +124,16 @@
       { Suite.label = "HTTP Tracing"
       , Suite.tests = (\pid -> [
           HttpTracing.shouldCreateRootEntryWithBracketApi pid
-        , HttpTracing.shouldCreateNonRootEntryWithBracketApi pid
         , HttpTracing.shouldAddWebsiteMonitoringCorrelationWithBracketApi pid
+        , HttpTracing.shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithBracketApi pid
+        , HttpTracing.shouldCreateNonRootEntryWithBracketApi pid
+        , HttpTracing.shouldSetSpanSyWithBracketApi pid
         , HttpTracing.shouldSuppressWithBracketApi
         , HttpTracing.shouldCreateRootEntryWithLowLevelApi pid
         , HttpTracing.shouldAddWebsiteMonitoringCorrelationWithLowLevelApi pid
+        , HttpTracing.shouldIgnoreTraceIdParentIdIfWebsiteMonitoringCorrelationIsPresentWithLowLevelApi pid
         , HttpTracing.shouldCreateNonRootEntryWithLowLevelApi pid
+        , HttpTracing.shouldSetSpanSyWithLowLevelApi pid
         , HttpTracing.shouldSuppressWithLowLevelApi
         ])
       , Suite.options = Suite.defaultOptions {
diff --git a/test/shared/Instana/SDK/AgentStub/TraceRequest.hs b/test/shared/Instana/SDK/AgentStub/TraceRequest.hs
--- a/test/shared/Instana/SDK/AgentStub/TraceRequest.hs
+++ b/test/shared/Instana/SDK/AgentStub/TraceRequest.hs
@@ -5,7 +5,7 @@
 
 
 import           Data.Aeson          (FromJSON, ToJSON, Value (Object), (.:),
-                                      (.=))
+                                      (.:?), (.=))
 import qualified Data.Aeson          as Aeson
 import qualified Data.HashMap.Strict as HM
 import           Data.Text           (Text)
@@ -49,6 +49,7 @@
     , ec       :: Int          -- errorCount
     , crtp     :: Maybe String -- correlation type
     , crid     :: Maybe String -- correlation id
+    , sy       :: Maybe Bool   -- synthetic
     , spanData :: Aeson.Value  -- spanData
     , f        :: Maybe From   -- from
     } deriving (Eq, Show, Generic)
@@ -58,18 +59,19 @@
   parseJSON = Aeson.withObject "span" $
     \decodedObject ->
       Span
-        <$> decodedObject .: "t"
-        <*> decodedObject .: "s"
-        <*> decodedObject .: "p"
-        <*> decodedObject .: "n"
-        <*> decodedObject .: "ts"
-        <*> decodedObject .: "d"
-        <*> decodedObject .: "k"
-        <*> decodedObject .: "ec"
-        <*> decodedObject .: "crtp"
-        <*> decodedObject .: "crid"
-        <*> decodedObject .: "data"
-        <*> decodedObject .: "f"
+        <$> decodedObject .:  "t"
+        <*> decodedObject .:  "s"
+        <*> decodedObject .:  "p"
+        <*> decodedObject .:  "n"
+        <*> decodedObject .:  "ts"
+        <*> decodedObject .:  "d"
+        <*> decodedObject .:  "k"
+        <*> decodedObject .:  "ec"
+        <*> decodedObject .:  "crtp"
+        <*> decodedObject .:  "crid"
+        <*> decodedObject .:? "sy"
+        <*> decodedObject .:  "data"
+        <*> decodedObject .:  "f"
 
 
 instance ToJSON Span where
@@ -84,6 +86,7 @@
     , "ec"   .= ec sp
     , "crtp" .= crtp sp
     , "crid" .= crid sp
+    , "sy"   .= sy sp
     , "data" .= spanData sp
     , "f"    .= f sp
     ]
diff --git a/test/unit/Instana/SDK/Internal/SpanStackTest.hs b/test/unit/Instana/SDK/Internal/SpanStackTest.hs
--- a/test/unit/Instana/SDK/Internal/SpanStackTest.hs
+++ b/test/unit/Instana/SDK/Internal/SpanStackTest.hs
@@ -395,6 +395,7 @@
       , RootEntry.timestamp       = 1514761200000
       , RootEntry.errorCount      = 0
       , RootEntry.serviceName     = Nothing
+      , RootEntry.synthetic       = False
       , RootEntry.correlationType = Nothing
       , RootEntry.correlationId   = Nothing
       , RootEntry.spanData        = emptyValue
diff --git a/test/unit/Instana/SDK/Internal/SpanTest.hs b/test/unit/Instana/SDK/Internal/SpanTest.hs
--- a/test/unit/Instana/SDK/Internal/SpanTest.hs
+++ b/test/unit/Instana/SDK/Internal/SpanTest.hs
@@ -268,6 +268,7 @@
         , RootEntry.timestamp       = 1514761200000
         , RootEntry.errorCount      = 0
         , RootEntry.serviceName     = Nothing
+        , RootEntry.synthetic       = False
         , RootEntry.correlationType = Nothing
         , RootEntry.correlationId   = Nothing
         , RootEntry.spanData        = initialData
diff --git a/test/unit/Instana/SDK/TracingHeadersTest.hs b/test/unit/Instana/SDK/TracingHeadersTest.hs
--- a/test/unit/Instana/SDK/TracingHeadersTest.hs
+++ b/test/unit/Instana/SDK/TracingHeadersTest.hs
@@ -126,4 +126,3 @@
     assertEqual "correlation type" (Just "web") correlationType
     assertEqual "correlation ID" (Just "1234567890abcdef") correlationId
 
-
