Background documentationWhen to Plan in MRP Live and When to Plan with Classic MRP

 

During the planning run, the system plans the materials according to the sequence determined by the low-level codes that are defined in the bill of materials. That is, for the first low-level code (0), the system determines which materials can be included in MRP Live on HANA and plans these first. In a second step, the system determines the materials with the same low-level code that could not be planned in MRP Live on HANA and then automatically plans these materials using classic MRP. Included in this second step are also the materials that were planned in MRP Live on HANA but for which an error occurred. Both the planning in MRP Live on HANA and classic MRP has to be completed for one low-level code before the system commences the planning of the next low-level code (1).

That is, during the planning process, the system divides the materials into groups:

  • Materials that can be planned using MRP Live on HANA

  • Materials that still have to be planned in classic MRP because:

    • They require a planning feature that is not yet supported by MRP Live.

      For more information, see SAP Note 1914010Information published on SAP site and MRP Live: Incompatible Changes.

    • You have set the Plan in Classic MRP indicator in transaction md_mrp_force_classic. In this report, the system displays all materials with active MRP views in the material master and you can define that the planning run is to be executed using classic MRP for individual materials. You should check which materials require the processing of a BAdI during the MRP run and always set this indicator for these materials.

  • Materials that cannot be planned in either MRP Live on HANA or in classic MRP because of inconsistent master data, for example. The system creates exception MRP lists for such materials that cannot be planned.

More Information

See also Calculating Low-Level Codes.