{
{   The purpose of this request is to return the task id of the parent of
{ the specified task.  An exception is returned if the specified task does
{ not exist or the specified task has no parent (i.e. the job monitor task).
{
{       PMP$GET_PARENT_TASK_ID (CHILD_TASK_ID, PARENT_TASK_ID, STATUS)
{
{ CHILD_TASK_ID: (input) This parameter specifies the task id of the child
{       whose parent's task id is to be returned.
{
{ PARENT_TASK_ID: (output) This parameter specifies the task id of the
{       child's parent.
{
{ STATUS: (output) This parameter specifies the request status.
{       CONDITIONS:
{             pme$task_id_not_found
{             pme$task_has_no_parent
{
