Error during completion of workflow dialog participant step | AEM 6.0, 6.1, 6.2

Last updated on 27 Des 2022

Issue

The error similar to the one below "No matching property definition: cmd = advance" is observed in the AEM error.log file:

13.04.2017 08:28:20.094 *ERROR* [10.26.69.136 [1492086500086] POST /content/geometrixx/en HTTP/1.1] org.apache.sling.servlets.post.impl.operations.ModifyOperation Exception during response processing.
javax.jcr.nodetype.ConstraintViolationException: No matching property definition: cmd = advance
 at org.apache.jackrabbit.oak.jcr.delegate.NodeDelegate.setProperty(NodeDelegate.java:522)
 at org.apache.jackrabbit.oak.jcr.session.NodeImpl$35.perform(NodeImpl.java:1358)
 at org.apache.jackrabbit.oak.jcr.session.NodeImpl$35.perform(NodeImpl.java:1346)
 at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.perform(SessionDelegate.java:202)
 at org.apache.jackrabbit.oak.jcr.session.ItemImpl.perform(ItemImpl.java:112)
 at org.apache.jackrabbit.oak.jcr.session.NodeImpl.internalSetProperty(NodeImpl.java:1346)
 at org.apache.jackrabbit.oak.jcr.session.NodeImpl.setProperty(NodeImpl.java:432)
 at org.apache.sling.servlets.post.impl.helper.SlingPropertyValueHandler.store(SlingPropertyValueHandler.java:592)
 at org.apache.sling.servlets.post.impl.helper.SlingPropertyValueHandler.setPropertyAsIs(SlingPropertyValueHandler.java:305)
 at org.apache.sling.servlets.post.impl.helper.SlingPropertyValueHandler.setProperty(SlingPropertyValueHandler.java:158)
 at org.apache.sling.servlets.post.impl.operations.ModifyOperation.writeContent(ModifyOperation.java:411)
 at org.apache.sling.servlets.post.impl.operations.ModifyOperation.doRun(ModifyOperation.java:101)
 at org.apache.sling.servlets.post.AbstractPostOperation.run(AbstractPostOperation.java:92)
 at org.apache.sling.servlets.post.impl.SlingPostServlet.doPost(SlingPostServlet.java:202)
 at org.apache.sling.api.servlets.SlingAllMethodsServlet.mayService(SlingAllMethodsServlet.java:149)
 at org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:345)
 at org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:376)
 at org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:547)
 at org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChain.java:44)
 at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:77)
 at com.day.cq.personalization.impl.TargetComponentFilter.doFilter(TargetComponentFilter.java:96)
 at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
 at com.day.cq.wcm.core.impl.WCMDebugFilter.doFilter(WCMDebugFilter.java:133)
 at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
 at com.day.cq.wcm.core.impl.WCMComponentFilter.filterRootInclude(WCMComponentFilter.java:371)
 at com.day.cq.wcm.core.impl.WCMComponentFilter.doFilter(WCMComponentFilter.java:171)
 at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
 at org.apache.sling.engine.impl.SlingRequestProcessorImpl.processComponent(SlingRequestProcessorImpl.java:282)
 at org.apache.sling.engine.impl.filter.RequestSlingFilterChain.render(RequestSlingFilterChain.java:49)

Cause

A known product bug CQ-49206.

The issue occurs when completing a workflow dialog participant step which only stores data with the work item, not on the payload. The POST operation attempts to save the data with the payload (and can fail). The Sling Post servlet does not get any ./ prefixed fields so it attempts to save the values like cmd = advance on the payload.