Exercise Objectives
Exercise 4: Subassembly Planning
Exercise Objectives
After completing this exercise, you will be able to:
• Explain the functions in subassembly planning
• Monitor the consumption of the planned independent requirements for the assembly by dependent requirements or reservations created by the procurement elements for the finished product
Business Example
Precision Pumps Inc. wants to reduce delivery times for the pump. Procurement of the assemblies is therefore to be triggered in advance, not just when the pump is planned. This will reduce the total replenishment lead time for the finished product.
Task 1:
You want to plan subassemblies in order to reduce delivery times for the pump. To do this, you must create planned independent requirements for the assemblies for pump R-F1## using an appropriate requirements type. We are now going to carry out subassembly planning using assembly R-B1## in plant 1000 as an example.
1. Modify the material master for R-B1## accordingly. Enter the following parameters in the MRP 3 view in plant 1000:
Strategy group: 70(subassembly planning) Consumption mode: 2(Backward/forward) Mixed MRP: 1(subassembly planning)
Save the material master.
2. Enter a planned independent requirement of 180 pieces for the month after next for material R-B1## in plant 1000. Set the planning period to monthly by entering the indicator M in the planning period field in the initial screen of the transaction. Use the following data:
Requirements date: Current month + 2 months Requirement quantity: 180 pieces
Make sure the requirements type is VSFB and the consumption indicator is 3 in the item screen of the planned independent requirements. Save the requirement.
Task 2:
Call the stock/requirements list for material R-B1## in plant 1000.
1. Which planned independent requirement quantity for the independent requirement for the assembly created above is still relevant for requirements (displayed)?
______________________________________________________
2. Examine the consumption in the display of the total planned independent requirements situation of material R-B1## in plant 1000. You can access this screen from the Demand Management menu or directly from the stock/requirements list. Which type of requirements consumed the VSFB planned independent requirements and what was the quantity consumed?
______________________________________________________
3. Is the VSFB requirement covered by a procurement element?
______________________________________________________
Task 3:
Select the VSFB planned independent requirement in the current stock/requirements list.
1. Which VSFB planned independent requirement quantity appears when you choose Details of Element and Display Element?
______________________________________________________
2. How do you explain the difference between this and the display in the list?
______________________________________________________
Task 4:
Now carry out single-item, multilevel planning for material R-B1## in plant 1000.
1. Proceed using the same transaction and settings as in the previous exercises.
Task 5:
Call the stock/requirements list for material R-B1## in plant 1000.
1. Which planned independent requirement quantity for the assembly independent requirement created above is still relevant for requirements (displayed)?
______________________________________________________
2. Is the requirement covered by a procurement element now?
______________________________________________________
Solution 4: Subassembly Planning
Task 1:
You want to plan subassemblies in order to reduce delivery times for the pump. To do this, you must create planned independent requirements for the assemblies for pump R-F1## using an appropriate requirements type. We are now going to carry out subassembly planning using assembly R-B1## in plant 1000 as an example.
1. Modify the material master for R-B1## accordingly. Enter the following parameters in the MRP 3 view in plant 1000:
Strategy group: 70(subassembly planning) Consumption mode: 2(Backward/forward) Mixed MRP: 1(subassembly planning) Save the material master.
a) Menu path: Logistics → Production → Master Data → Material Master → Material → Change → Immediately
2. Enter a planned independent requirement of 180 pieces for the month after next for material R-B1## in plant 1000. Set the planning period to monthly by entering the indicator M in the planning period field in the initial screen of the transaction. Use the following data:
Requirements date: Current month + 2 months Requirement quantity: 180 pieces
Make sure the requirements type is VSFB and the consumption indicator is 3 in the item screen of the planned independent requirements. Save the requirement.
a) Menu path: Logistics → Production → Production Planning → Demand Management → Planned Independent Requirements → Create
Task 2:
Call the stock/requirements list for material R-B1## in plant 1000.
1. Which planned independent requirement quantity for the independent requirement for the assembly created above is still relevant for requirements (displayed)?
______________________________________________________
a) Planned independent requirements quantities still relevant to requirements: varies (for example, 55 pieces)
2. Examine the consumption in the display of the total planned independent requirements situation of material R-B1## in plant 1000. You can access this screen from the Demand Management menu or directly from the stock/requirements list. Which type of requirements consumed the VSFB planned independent requirements and what was the quantity consumed?
______________________________________________________
a) Consumption with the VSFB planned independent requirement:
Varies. The dependent requirements and, if necessary, the order reservations (each for 25 pc) within the consumption periods consume the VSFB independent requirements.
3. Is the VSFB requirement covered by a procurement element?
______________________________________________________
a) Procurement elements for the VSFB requirements: No, there is not an appropriate procurement element available as no planning run has been carried out yet.
Task 3:
Select the VSFB planned independent requirement in the current stock/requirements list.
1. Which VSFB planned independent requirement quantity appears when you choose Details of Element and Display Element?
______________________________________________________
a) VSFB planned independent requirements at Display element: The complete quantity of 180 pc is displayed.
2. How do you explain the difference between this and the display in the list?
______________________________________________________
a) Explanation: The system only displays the non-consumed quantity in the list. The planned independent requirements had not yet been reduced (by a goods receipt, for example). The complete quantity is therefore still available on the database.
Task 4:
Now carry out single-item, multilevel planning for material R-B1## in plant 1000.
1. Proceed using the same transaction and settings as in the previous exercises.
a) Menu path: Logistics → Production → MRP → Planning → Multilevel Single-Item Planning
Task 5:
Call the stock/requirements list for material R-B1## in plant 1000.
1. Which planned independent requirement quantity for the assembly independent requirement created above is still relevant for requirements (displayed)?
______________________________________________________
a) Planned independent requirements quantity displayed: This varies, as above, for example 55 pc.
2. Is the requirement covered by a procurement element now?
______________________________________________________
a) Procurement element: Yes, the requirement is now covered by a new planned order.
Lesson Summary
You should now be able to:
• Use planning strategies for make-to-stock production