Unable to put invoice in dispute

When trying to create a dispute we are getting the following error.

"com.oracle.bpel.client.BPELFault: faultName: {{

http://xmlns.oracle.com/bpel/workflow/taskService}operationErroredFault}

 messageType: {{

http://xmlns.oracle.com/bpel/workflow/taskService}workflowErrorMessage}

 parts: {{ payload=ORABPEL-30891 exception.code:30891 exception.type: ERROR exception.severity: 2 exception.name: An approval group is not found. exception.description: The task FinArTrxnsCreditMemosApproval has one or more rules that use the approval group Test. exception.fix: Verify that the approval group name used in the rules is the name of a group that exists and was created correctly. 30891exception.code:30891 exception.type: ERROR exception.severity: 2 exception.name: An approval group is not found. exception.description: The task FinArTrxnsCreditMemosApproval has one or more rules that use the approval group Test. exception.fix: Verify that the approval group name used in the rules is the name of a group that exists and