Q: We have a BOM - 'A' with two packing materials 'X' and 'Y'. For 1000 units of 'A', 1 packing material of 'X' is required and for 50 units of 'A', 1 packing material of 'Y' is required. Base quantity of 'A' is defined as 1000. How can I define 'X' & 'Y' or in fact 'A'?
A: Make the base quantity of 'A' as 5000. The resulting component quantities would be 5 of 'X' and 100 of 'Y'.
Work Centers
Q: Can we have more than 6 standard values in standard value key?
A: One way to achieve this is to create another operation step using the same work center. However this shall be with a control key that is not a milestone. When the milestone operation is confirmed, the previous operations up to the next milestone are automatically confirmed. To get the desired number of standard values , all the 'non milestone' steps can be built depending on the need.
Routing
Q: Can we use same routing for materials undergoing the same process/operations? Can we avoid separate routing for each and every material produced?
A1: Presume that there are 50 products and the fabrication shop uses a set of 10 machines. If all these products use the same settings of the machines, Reference Operation Sets (task list type S) can be setup for common processes that use the same work centers. However costing, scheduling and capacity will be affected if each product has different setup time and Reference Operation sets can not be used.
A routing for each material number ( type N or R) has to be set up and within that routing, the Reference Operation Set can be used.
However you can by try utilizing the KMAT material and product variants invariant configuration to avoid separate routing for each material.
A2: You may create a routing group. Go into routing creation and enter the plant and the group name. If you want you may name the group , else name is assigned by internal counter). Create the routing with the work centers, operation times, etc. Go to the "Header overview" screen and click on the "Mat Alloc" screen. Fill in the blanks with all the material masters that use this routing.
Q: Scheduling times can be defined in the material master record by;
# entering the in-house production time. This value can be updated from the routing by the system.
# entering the setup, tear down, processing, and interoperation times. If these values are maintained, the system determines the in-house production time on the basis of lot size.
How do you get the system to update this value from the routing?
A: In routing, carry out scheduling. Go into the routing operation overview and follow Extras -> Scheduling -> Results. The pop-up window displays the scheduling data. At the bottom there is a pushbutton to copy the scheduling data to the material master Check this push button to update master data.
Q: We have deleted a group key in an operation in routing and the same does not appear for this routing (CA02). But we noticed that entries are maintained in table PLPO and the deletion indicator is not set. How does the system remember this deletion of group key?
A: You may look at the tables PLKO, MAPL and PLAS.
Sales & Operations Planning
Q: We defined SOP in months. However during SOP transfer to demand management, our independent requirements are appearing in weeks. How can we correct this from weeks into months ?
A: Check transaction OMPA for general split. OMPS - based on the MRP group. Ensure that MRP group assigned to the material. Delete any allocations in these tables. Then periods will be transferred to Demand Management with the same splits as in SOP. Also check whether the value of period is set as "month" at your plant level in Transaction 'OMP7'
Demand Management
Q: Sales quantities in SOP for certain days are transferred into Demand Management and are shown as planned independent requirements. We need to keep the settings in SOP and change the periods in Demand Management? We would like to have a rolling horizon, for ex: the following 4 weeks on a daily basis, after that on a monthly basis. What is the best way to do this?
A: Use the automatic period split function.
M R P
Q: We have a lot size procedure here which is creating more order proposals. How do you set the limit value for maximum number of MRP order proposals per date in IMG?
A: Under customization, try materials management->consumption based planning->maintain all plants
Q: What is the difference between "planned consumption" and "Unplanned consumption"? Can safety stock calculation be done on either of these?
A: While customizing movement types (OMJJ) it is defined as to which set of consumption values gets posted during the material movement. For some it may always be the total consumption and for some it is always the unplanned one and for some it is dependent on whether the issues were done with reference to a reservation ie., a planned consumption. The way these consumption values are taken into account in MRP is defined in the customizing of MRP types.
For Reorder point planning (VM) the total consumption is used to calculate the safety stock and the reorder point.
For Forecast based planning (VV) the total consumption is used to build the forecast which will be used to compile the order proposals.
For Deterministic MRP (PD) the unplanned consumption is used to calculate the forecast which in turn is added to the actual demand.
Q: We want the system to run a single level MRP automatically on receipt of sales order. How to configure triggering event based MRP?
A: This can only be run if material master has planning strategy 41 (made-to-order) in the MRP2 view. We need to run for other MRP types. We have to create a user exit in the sales order processing (VA01) to start MRP based on data from our sales transaction.
Q: We have an assembly 'A' using a subassembly 'B'. 'B' in turn uses raw material 'C'. Item 'A' is an MPS and is duly marked in Material Master. Item 'B' and 'C' are marked as 'PD'. When demand for 'A' is entered and MPS is run , upto which level the requirements are taken care of?
A: MRP can be run depending on your requirement. For example:
- Single Item / Single Level from MPS - Transaction Code MD42 - Only the top MPS item ( 'A' in this case) is planned and dependent requirements will be passed to MRP item ( 'B' ) . Run MRP, Transaction MD02 on 'B' to plan it and all MRP items below .
- Single Item / Multi Level from MPS - Transaction Code MD41 - All levels are planned - A , B & C
- Total Planning from MPS online or background - Transaction Code MD40 or MDBS
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