when try to delete the capacity category in which pooled capacity field is grayed in existing work center, it is giving error as "Selected work center capacity is basis for scheduling". After entering the capacity in scheduling tab, when try to delete the capacity category it is giving error as "Capacity is still being used". After doing TECO to the open prod orders where this work center was used, had deleted the capacity category and created new category in which i assigned pooled capacity. But when i try to do back revoke of TECO after saving, basic dates and scheduling dates are changing. so experts, my requirement is
1. Does can we avoid changing of above dates in prod order after revoke of TECO.
2. Does we have any process by which we can avoid the TECO of open prod orders.
3. Does we have any process by which we can create pooled capacity in existing work centers only without creating new work centers.