@rossko57
I really appreciate your help. This rule works beautifully. Code is very well commented - I can learn a lot from it. Many many thanks for helping out again 
Hi,
So far the rule to control heater been working very well, really glad with it.
Couple days ago I added two text items to my sitemap to display message about two control states for other members of my household:
Mode 0 (OFF) no description was needed 
Mode 1 (Control ON) - āControl ON - Keeping Target Tempā
Mode 2 (Bath) - āBath - Keeping 24Ā°Cā
Sitemap
Text item=Temperature_Setpoint_Bath_Mode2_Info label="Bath - Keeping 24Ā°C" labelcolor=["red"] visibility=[Temperature_Setpoint_Mode==2] icon="my_info"
Text item=Temperature_Setpoint_Bath_Mode1_Info label="Control ON - Keeping Target Temp" labelcolor=["red"] visibility=[Temperature_Setpoint_Mode==1] icon="my_info"
Everything was done in sitemap so no items been placed in items
Today I was reviewing logs and discovered errors regarding both text items from above.
Everything works as expected, both text messages will appear on sitemap when switch is in either mode so not really sure why seeing those errors ?
I hope someone with more experience can spot a problem somewhere.
2019-02-16 17:47:25.038 [WARN ] [b.core.events.EventPublisherDelegate] - given new state is NULL, couldn't post update for 'Temperature_Setpoint_Bath'
2019-02-16 17:47:25.210 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:25.213 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:25.215 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:25.523 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:25.526 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:25.528 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:30.986 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:30.988 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:30.991 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:31.432 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:31.436 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:31.439 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:42.906 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:42.909 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:42.911 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:43.225 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:43.228 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:43.230 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:51.407 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:51.416 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:51.419 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:51.942 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:51.946 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:47:51.949 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:05.421 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:05.424 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:05.426 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:05.755 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:05.758 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode2_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:05.760 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:08.146 [WARN ] [b.core.events.EventPublisherDelegate] - given new state is NULL, couldn't post update for 'Temperature_Setpoint_Bath'
2019-02-16 17:48:09.678 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode1_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:09.681 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode1_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:09.684 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:09.869 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode1_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:09.872 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Temperature_Setpoint_Bath_Mode1_Info' for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:09.874 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
2019-02-16 17:48:43.141 [ERROR] [ersey.server.ServerRuntime$Responder] - An I/O error has occurred while writing a response message entity to the container output stream.
org.glassfish.jersey.server.internal.process.MappableException: org.eclipse.jetty.io.EofException
at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:92) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
at org.glassfish.jersey.internal.Errors.process(Errors.java:315) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
at org.glassfish.jersey.internal.Errors.process(Errors.java:297) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
at org.glassfish.jersey.internal.Errors.process(Errors.java:267) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
at com.eclipsesource.jaxrs.publisher.internal.ServletContainerBridge.service(ServletContainerBridge.java:76) [15:com.eclipsesource.jaxrs.publisher:5.3.1.201602281253]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848) [85:org.eclipse.jetty.servlet:9.3.21.v20170918]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:584) [85:org.eclipse.jetty.servlet:9.3.21.v20170918]
at org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:71) [183:org.ops4j.pax.web.pax-web-jetty:6.0.9]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) [82:org.eclipse.jetty.security:9.3.21.v20170918]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:284) [183:org.ops4j.pax.web.pax-web-jetty:6.0.9]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512) [85:org.eclipse.jetty.servlet:9.3.21.v20170918]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:80) [183:org.ops4j.pax.web.pax-web-jetty:6.0.9]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.Server.handle(Server.java:534) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) [84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108) [76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) [76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) [87:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) [87:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) [87:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) [87:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) [87:org.eclipse.jetty.util:9.3.21.v20170918]
at java.lang.Thread.run(Thread.java:748) [?:?]
Caused by: org.eclipse.jetty.io.EofException
at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:199) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:420) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:313) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:147) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection$SendCallback.process(HttpConnection.java:731) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:241) ~[87:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:224) ~[87:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:519) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:745) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:801) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:235) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:219) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:496) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at java.io.OutputStream.write(OutputStream.java:75) ~[?:?]
at org.glassfish.jersey.servlet.internal.ResponseWriter$NonCloseableOutputStreamWrapper.write(ResponseWriter.java:320) ~[?:?]
at org.glassfish.jersey.message.internal.CommittingOutputStream.write(CommittingOutputStream.java:218) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$UnCloseableOutputStream.write(WriterInterceptorExecutor.java:294) ~[?:?]
at org.eclipse.smarthome.io.rest.core.internal.GsonProvider.writeTo(GsonProvider.java:71) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) ~[?:?]
at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) ~[?:?]
at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86) ~[?:?]
... 46 more
Caused by: java.io.IOException: Broken pipe
at sun.nio.ch.FileDispatcherImpl.writev0(Native Method) ~[?:?]
at sun.nio.ch.SocketDispatcher.writev(SocketDispatcher.java:51) ~[?:?]
at sun.nio.ch.IOUtil.write(IOUtil.java:148) ~[?:?]
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:504) ~[?:?]
at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:179) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:420) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:313) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:147) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection$SendCallback.process(HttpConnection.java:731) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:241) ~[87:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:224) ~[87:org.eclipse.jetty.util:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:519) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:745) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:801) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:235) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:219) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:496) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
at java.io.OutputStream.write(OutputStream.java:75) ~[?:?]
at org.glassfish.jersey.servlet.internal.ResponseWriter$NonCloseableOutputStreamWrapper.write(ResponseWriter.java:320) ~[?:?]
at org.glassfish.jersey.message.internal.CommittingOutputStream.write(CommittingOutputStream.java:218) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$UnCloseableOutputStream.write(WriterInterceptorExecutor.java:294) ~[?:?]
at org.eclipse.smarthome.io.rest.core.internal.GsonProvider.writeTo(GsonProvider.java:71) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) ~[?:?]
at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106) ~[?:?]
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) ~[?:?]
at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86) ~[?:?]
... 46 more
Always worth peeking in the logs from time to time 
Because ā¦ you specified in the sitemap entries for those Text lines to go and look for non-existent Items. The UI has no way to know you didnāt really want it to look for an Item, when you specified an Item.
The quick fix is simply - donāt specify an item. Just leave the item=xxx part out of your sitemap line altogether.
But do consider instead making your line fancier. Maybe have a meaningful item, actual temperature say. The sitemap label="xxx" custom message will override the itemās usual label. You can put a [%.1f] or similar format into your custom label to display the chosen itemās value.
The item that you use for selection in visibility=xxx need not be the same one as in any item=zzz
Thanks @rossko57
Not sure if I putting this together correctly as my sitemap is crashing when saving.
I changed my sitemap as follows:
Item="Bath - Keeping 24Ā°C" labelcolor=["red"] visibility=[Temperature_Setpoint_Mode==2] icon="my_info"
Item="Control ON - Keeping Target Temp" labelcolor=["red"] visibility=[Temperature_Setpoint_Mode==1] icon="my_info"
View of my sitemap with one of the message displayed.
hum, well in the version that worked (but produced nuisance log entries) you had
Text item=Temperature_Setpoint_Bath_Mode2_Info label="Bath - Keeping 24Ā°C" ....
so I advised
I donāt know how else to put it.
I tried every combination and can`t get it to work sorry 
How would you modify this syntax to work without erroring ?
This is my current syntax:
Text item=Temperature_Setpoint_Bath_Mode1_Info label="Auto Mode - Maintening Target Temp" labelcolor=["red"] visibility=[Temperature_Setpoint_Mode==1] icon="my_info"
I donāt knows what is not clear about āleave the item= part outā.
Text label="Auto Mode - Maintening Target Temp" labelcolor=["red"] visibility=[Temperature_Setpoint_Mode==1] icon="my_info"
Now I know what I was doing wrong - I wasnāt far off but my solution didn`t worked.
Many thanks @rossko57