MRP - Transaction WC27 Batch Run for MRP

Question

Each day we run WC27 as a background program.  We have it configured to define the scope of planning (all of the plants that we want MRP to run).  We also have a user exit key.  The user exit parameters, is a set group of specific MRP controllers.  Materials (part numbers) that have this specific MRP controller should run the MRP control parameters for Scheduling = 2.
The other parameters are as follows:
Processing Key = NETPL
Create Purchase Req = 1
Schedule lines =3
Create MRP list = 1
Planning Mode = 3
We currently see each day, materials (part numbers) that the routing was changed to a different work center using CEWB.  However, when the background job runs for MRP (WC27), it does not update the planned orders with the new routing work center change for the material (part number) that has an MRP controller specific for the scheduling parameter set to 2.  Why would our MRP run not change the planned order?  If, I run MD02, it does update the planned orders.  So why is not changing it in the batch run?  It is causing issues with our end users running CM25 for a specific work center.

Answer 1

Hi,
a.     Please check if the material in question has the Planning file entry u2013 through MD21
b.     If the planning file entry is not seen, create Planning file entries using MD20 or MDAB
c.     Run MRP (MD01 or WC27) with Planning mode as 3 or 2, and check if your changes have got effected into the Planned orders.
When we use Net-change planning at the Plant level, the system checks for the presence of Planning file entriesu2026 and whichever material has undergone some changes relevant for MRP, and thus having the planning file entries are covered during the MRP run.
Workcenter or Routing changes do not result in creating Planning file entry.
At the same time, when we execute planning for the material level (MD02), the planning run does not refer to the Planning file entry and hence the planning run changes the Planned order master data.
Kindly refer to the definition below..
u2018In net change planning only those materials are planned for which the net change planning indicator in the planning file has been set as a planning file entry. The system usually sets the indicator automatically as soon as a change is made to the material that is relevant to MRP.
The following changes cause an entry in the planning file to be made:
u2022     Changes to stock, if these change the stock/requirements situation of the material
u2022     Creation of purchase requisitions, purchase orders, planned orders, sales requirements, forecast requirements, dependent requirements or reservations
u2022     Changing to fields that are relevant to the planning run for these receipts and issues or in the material master
u2022     Deleting receipt or issue quantities
u2022     If you have changed the settings of an MRP type, a lot-sizing procedure or a purchasing department processing time in Customizing, the materials that are affected by these changes thus have no planning file entry and are not included automatically in the net change planning. To enable the changes made to take effect, you choose regenerative planning in the initial screen of the planning run or make an entry manually in the planning file.
Please refer to the links u2013
http://help.sap.com/erp2005_ehp_04/helpdata/EN/f4/7d3f9344af11d182b40000e829fbfe/frameset.htm
http://help.sap.com/erp2005_ehp_04/helpdata/EN/f4/7d3f9344af11d182b40000e829fbfe/frameset.htm
http://help.sap.com/erp2005_ehp_04/helpdata/EN/f4/7d3f9344af11d182b40000e829fbfe/frameset.htm
http://help.sap.com/erp2005_ehp_04/helpdata/EN/f4/7d3f9344af11d182b40000e829fbfe/frameset.htm
http://help.sap.com/erp2005_ehp_04/helpdata/EN/f4/7d3f9344af11d182b40000e829fbfe/frameset.htm
http://help.sap.com/erp2005_ehp_04/helpdata/EN/f4/7d3f9344af11d182b40000e829fbfe/frameset.htm
Thanks
Senthil