Getting error while adding supplier name to AddContingentWorker approval notification subject

Summary:

Content (please ensure you mask any confidential information):

Error:

ORABPEL-30065 exception.code:30065 exception.type: ERROR exception.severity: 2 exception.name: Error in task definition. exception.description: Error in evaluating parameter Exception applying formatting in the task definition. The error is Add Contingent Worker ({0}), {1}, {2}, {3}, {4}. The task definition ORABPEL-37058 exception.code:37058 exception.type: ERROR exception.severity: 2 exception.name: Invalid value for xpath expression. exception.description: The xpath expression /task:task/task:payload/ns2:getNewAssignmentByTransactionIdResponse/ns2:result/ns17:AssignmentVOToBaseWorkerAsgDFFVO/ns21:supplier is invalid: Namespace prefix 'ns17' used but not declared. exception.fix: Verify that the xpath expression is valid for the task data. . exception.fix: Make sure that the parameter Exception applying formatting is specified correctly in the task definition.