SAP Knowledge Base Article - Preview

3079796 - MM02 No warning message MM221 when changing MRP lot size


Changing the MRP lot size to a lot size that is dependent on a planning calendar, the system does not issue the warning message:
"Maintain the planning calendar for the plant or its reference plant" - Message no. MM221

Image/data in this KCS is from SAP internal systems,sample data, or demo systems. Any resemblance to real data is purely coincidental.



  • SAP ERP Logistics (LO)
  • SAP Enhancement package for SAP ERP
  • SAP Enhancement package for SAP ERP, version for SAP HANA
  • SAP S/4HANA, on-premise


SAP ERP 6.0 ; SAP S/4HANA 1709 ; SAP S/4HANA 1809 ; SAP S/4HANA 1909 ; SAP S/4HANA 2020 ; SAP S/4HANA 2021


OMT4, OMI4, MM 221, MRP1, MRP2, Planning calendar, MRP Lot Size, Period lot size acc. to plng calendar, MARC-DISLS, MARC-MRPPP, T160M , KBA , LO-MD-MM , Material Master , Problem

About this page

This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).

Search for additional results

Visit SAP Support Portal's SAP Notes and KBA Search.