The partial quantity of material managed separately from other quantity of same material in stock is called Batch.

The product group is created as a material master record with material type PROD and this record is deleted in SARA and the members deleted in the product group and then archive the product group in transaction SARA. Object MM_MATNR.

Routing is the component in BOM which is allocated to operation.

MPS in Back ground online was run for a plant in either ways it would run MPS for a single material/plant, if it does not work it need to run a planning file and a consistency check first, transaction OMDO and MDRE respectively it require to set up two jobs to do it but it is straight forward, once it was done this set up the back ground job MPS to run and do it in NEUPL first time round and then change to NETCH after that.

The Stock keeping in a company is done at Base unit of measure.

MPS is run to plan the materials which are of 'A' type in the abc analysis (80% dollar value) that have to be planned before. MPS is also a type of MRP only in which components just below the materials on which MPS run is taken place, are planned. 

BOM is always created at Single Level.

Components of BOM are List of Components, Quantity of Components and Unit of Measure of Components.

Component allocation is done by routing maintenance or BOM maintenance for the assembly. This is master data maintenance. As soon as a PO is created, the master data is read into the PO. 

The planning values that are maintained by using transaction code MC95 to display the entries and the table are S076.