Rollback HCM Extract using Flow Action Service Web Service

I have a requirement to rollback an HCM Extract (which is in Completed status) using the FlowActionService SOAP service.

SOAPAction:
http://xmlns.oracle.com/apps/hcm/processFlows/core/flowActionsService/performAction

SOAP Request Parameters Used:

typ:flowInstanceName: «Extract Flow Name»
typ:flowTaskInstanceName: «Extract Name»
typ:actionName: ROLLBACK
typ:legislativeDataGroupName: US Legislative Data Group

Note: The Legislative Data Group (LDG) field appears to be mandatory, but my extract is not associated with any LDG.

Error Received:

JBO-FND:::FND_CMN_INVALID_ATTRB_API_SERV: <MESSAGE><NUMBER></NUMBER><TEXT>The value of the attribute flowInstanceName: USF_HR_INT003_GABOR_NEWHIRES_OB_bgtLdxGCEfCG5UNfLbxMsQ ,flowTaskInstanceName:USF_HR_INT003_GABOR_NEWHIRES_OB and legislativeDataGroupName: US Legislative Data Group isn't valid