T399D - Long-term planning allowed for a plant

Question

Hi gurus,
I was checking the table T399D and it has the "Long-term planning allowed for a plant" field (T399D-SIMPL), but, I do not know where I can customise this!
I was checking OMI8 and OPPQ (Parameters for DS section) transactions, but, I cannot find this field.
Could you help me in order to know where I can customise this?
Kind regards,
Sandra

Answer 1

Hi Sandra,
                 As it is correctly said that there is not much configuration required to Run LTP, but what you  basically need to maintain/configure is as follows-
To carry out an annual planning or a rolling quarterly planning run you require information on the
future stock and requirements situation. This means you need to know how sales and operations
planning influence resources(conceptually)-
In long-term planning you can also plan materials that usually require very little planning in
operative planning, such as, materials planned using reorder point planning, bulk material, and
materials planned using KANBAN. In long-term planning, you can plan these materials as you
would MRP materials. This provides you with an overview of how these materials influence the
demand program.
The materials you want to plan in long-term planning must have already been planned in
operative MRP.Apart from above conceptual knowledge what else you require to configure /maintain is-
Planning Scenario(If you are running wity reference to it)-MS31
And run it through MS02(with reference to planning scenario) where you have to put mandatory  MRP Control Parameters according to your business process eg.Processing key,create MRP list,planning mode,scheduling,firming planned orders.
Hope it fulfils your purpose at some extent.
Regards
Chandra