Original estimate 4.1d is not valid

When creating a task using REST with original estimate to 4.1d, It gives following error.

ERROR http-9090-14 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/Daidb] - Exception while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract com.swisscom.eai.daidb.shared.model.estimator.Estimation com.swisscom.eai.daidb.shared.JiraManager.syncIssuesForFeasibilityEstimation(com.swisscom.eai.daidb.shared.model.estimator.Estimation) throws com.swisscom.eai.daidb.shared.common.PamsException' threw an unexpected exception: com.atlassian.jira.rest.client.RestClientException: The original estimate specified is not valid.
at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:385)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:588)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
Caused by: com.atlassian.jira.rest.client.RestClientException: The original estimate specified is not valid.
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient.invoke(AbstractJerseyRestClient.java:68)
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient.impl(AbstractJerseyRestClient.java:196)
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient.postAndParse(AbstractJerseyRestClient.java:184)
at com.atlassian.jira.rest.client.internal.jersey.JerseyIssueRestClient.createIssue(JerseyIssueRestClient.java:415)
at com.swisscom.eai.daidb.server.jira.JiraAdapter.synchronizeSubTasksForUsecaseEstimation(JiraAdapter.java:398)
at com.swisscom.eai.daidb.server.jira.JiraAdapter.upsertIssueForUsecaseEstimation(JiraAdapter.java:239)
at com.swisscom.eai.daidb.server.jira.JiraAdapter.syncIssuesForFeasibilityEstimation(JiraAdapter.java:170)
at com.swisscom.eai.daidb.server.jira.JiraServiceImpl.syncIssuesForFeasibilityEstimation(JiraServiceImpl.java:71)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:569)
... 17 more
Caused by: com.sun.jersey.api.client.UniformInterfaceException: Client response status: 400
at com.sun.jersey.api.client.WebResource.handle(WebResource.java:607)
at com.sun.jersey.api.client.WebResource.post(WebResource.java:235)
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient.doHttpMethod(AbstractJerseyRestClient.java:211)
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient.access$0(AbstractJerseyRestClient.java:208)
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient$9.call(AbstractJerseyRestClient.java:202)
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient.invoke(AbstractJerseyRestClient.java:54)
... 29 more