Are you bored of running capacity planning in addition to running the MRP live. Here is the way to avoid it by using the SAP PPDS which is now included in S/4 HANA itself. (Since 2016)
Previously PPDS was with APO system which is separate from ECC
(Like how we are logging in to DEV and QAS system separately)
APO system will have separate credentials and ECC will have separate credentials.
ECC now S/4 HANA - consider it as a execution system. PP Master data will be stored here and moved to APO system via CIF for planning.
APO PPDS now embedded in S/4 HANA. - Once it got the data from ECC it will do the planning by considering the capacity, relationships between phases, queue time, inter operations time and create a temporary transactional data with temporary number range and move it to ECC.
In ECC the temporary transactional data (Planned order, Process order, Purchase requisition..) will be created as actual transactional data with actual number ranges and again will be transferred back to APO system to capture the actual number range in APO. later the confirmation, consumption will takes place in ECC.
Simply we will say sap APO as planning system and ECC as execution system. Now the PPDS is available in ECC itself and not like a addon.
Actually APO consist of DP, SNP, PPDS, GATP. Out of which only PPDS is embedded to S/4 HANA
Disadvantage of SAP PP is infinite scheduling.
Advantage of PPDS is finite scheduling and it will be achieved at Planning run (like MD01N) itself.
Finite scheduling - MRP will consider the capacity. (Lathe Machine - it can work only up to a extend a day, So we need to consider the capacity and to create the order accordingly)
Infinite scheduling - MRP will not consider the capacity. (Cooling tower - In thermal power plant the steam need to be cooled after using it. The cooling tower will not have any capacity. It will work infinitely without any capacity bottlenecks)
In this blog I will explain how to avoid the capacity planning and how to do finite scheduling via PPDS on running production planning run.
Master data in PPDS will be said as below. It will be displayed with separate tcode.
Product - /n/SAPAPO/MAT1
Resource - /SAPAPO/RES01
Location - /SAPAPO/LOC3
PDS - /SAPAPO/CURTO_SIMU - Note * always use /n in front of APO transaction
But the Master data creation for PPDS is same as like SAP PP module except some additional fields shown below.
Activating the advance planning checkbox in Material master and work center will create/transfer the data for PPDS.
Material Master - MM01
Highlighted fields to me maintained
Work Center - CR01
If you activate the advance planning all the changes in master data will be moved to PPDS Master data except production version, Which you need to move manually to PPDS after every change via CURTOADV_CREATE