Description:
When the "Organization Model.om" folder contains a space, the User Task is unable to recognize the dynamic properties.

The following characters in the Org model name will cause the same error:

! * ' ( ) ; : @ & = + $ , / ? % # [ ]

Symptoms:
If the "Organization Model.om" folder contains a space (or other unsupported character) in z dynamic organization model and a User Task is configured to use a Participant that references a position in the dynamic Org model, the following error is returned. The Dynamic organization identifier is not recognized when a user task is configured with a participant that references a dynamic participant:

[ERROR] com.tibco.n2.brm.model.util.DEDelegate - [ERROR] - {BRM_RESOURCE_INVALID_ENTITY} - Invalid validate entity ¬{extendedMessage=`The given entity refrence or RQL expression is invalid: [POSITION, _yI8bGLxDEeSra6erj6FJRw]`, componentClassName=`com.tibco.n2.brm.model.util.DEDelegate`, requestReceived=`2016-01-08T00:01:24.404Z`, hostAddress=`10.97.24.111`, nodeName=`BPMNode`, managedObjectType=`POSITION`, eventType=`FAULT`, messageCategory=`RESOURCE`, componentId=`BRM`, stackTrace=`com.tibco.n2.brm.services.InvalidEntityFault: The given entity reference or RQL expression is invalid: [POSITION, _yI8bGLxDEeSra6erj6FJRw]
Cause:
There is a defect in the User Task component where the dynamic Org attributes derived from process dynamic-org-mappings are not included in the User Task definition.

Dynamic Org Model position not recognized when the Organization Model name contains a space.

Rename the OrganizationModel.om folder in the project so that there are no space or ! * ' ( ) ; : @ & = + $ , / ? % # [ ] characters.

Information on creating Dynamic Organizations - https://docs.tibco.com/pub/amx-bpm/3.1.0/doc/html/bpmhelp/GUID-0E6BD88B-6B06-4E51-8F58-9C5E1B42EEE1.html