Process stuck with ODF-0022: Invalid expression Error

Products

• Clarity PPM On Premise

Issue/Introduction

Our process is now stuck and not progressing. We restarted the services and have the same issue in the BG logs:
 
ERROR 2019-01-17 10:32:49,572 [Post Condition Transition Pipeline 0 (tenant=clarity)] niku.odf (clarity:process_admin:27714044__20BEA1DD-AA8A-47DC-9809-42FC9AE4DC55:none)
java.lang.RuntimeException: ODF-0022: Invalid expression. Re-evaluate the OBS Expression.
at com.niku.odf.exprbuilder.ExprToWhereClauseConverter.handleFunction(ExprToWhereClauseConverter.java:1177)
at com.niku.odf.exprbuilder.ExprToWhereClauseConverter.handleChildren(ExprToWhereClauseConverter.java:562)
at com.niku.odf.exprbuilder.JEPOBSFunction.evaluate(JEPOBSFunction.java:120)
at org.nfunk.jep.EvaluatorVisitor.visit(Unknown Source) at org.nfunk.jep.ASTFunNode.jjtAccept(Unknown Source) at org.nfunk.jep.SimpleNode.childrenAccept(Unknown Source) at org.nfunk.jep.EvaluatorVisitor.visit(Unknown Source) at org.nfunk.jep.ASTFunNode.jjtAccept(Unknown Source) at org.nfunk.jep.EvaluatorVisitor.getValue(Unknown Source) at org.nfunk.jep.JEP.getValueAsObject(Unknown Source) at org.nfunk.jep.JEP.getValue(Unknown Source) at com.niku.odf.exprbuilder.ExpressionEvaluator.evaluateExpression(ExpressionEvaluator.java:463)
at com.niku.odf.exprbuilder.ExpressionEvaluator.evaluate(ExpressionEvaluator.java:166)
at com.niku.bpm.engine.exprevaluator.omp.OMPExpressionEvaluator.evaluateStepCondition(OMPExpressionEvaluator.java:175)
at com.niku.bpm.engine.exprevaluator.ExpressionEvaluator.evaluate(ExpressionEvaluator.java:189)
at com.niku.bpm.engine.rules.PostConditionTransitionPipeline.evaluatePostConditions(PostConditionTransitionPipeline.java:200)
at com.niku.bpm.engine.rules.PostConditionTransitionPipeline.execute(PostConditionTransitionPipeline.java:79)
at com.niku.bpm.engine.rules.Pipeline.run(Pipeline.java:280)

Environment

Release: All Supported
Component: Clarity Processes

Cause

The Post Condition expression for the timesheet did not return any results, this is why the process got stuck.

The OBS structure was changed and this no longer returned the expected results for the process.
 

Resolution

Revert the change in the OBS, the BG service should up the processes correctly within a few hours.