You have maintained the rounding value for the material under the MRP1 tab in the material master. However, after the MRP run, the planned orders or purchase requisitions are generated without considering the rounding value.
SAP S/4HANA Cloud all versions
There are 2 possible scenarios for this issue.
Scenario 1: The planned order or purchase requisition is the last planned lot in the planning horizon.
For the last planned lot during the planning, there is a checkbox "Last lot exact" in SSCUI 101112 - Check Lot-Sizing Procedures which can control its lot size. If you tick this checkbox, the last lot is planned exactly and not according to the settings for the lot-sizing procedure. The quantity available is zero at the end of the net requirements segment and the stock/requirements list, which means that you only procure what is needed.
Scenario 2: The planning is for make-to-order production or project production.
For MTO scenarios, there is an additional field in the SSCUI to control the lot-sizing procedure, "Lot Size: MtO". You can set it either as:
"/" (blank) - Lot-for-lot order quantity: the system calculates the order quantity using the lot-for-lot order quantity;
"1" - Lot-for-lot with rounding: the system calculates the order quantity using the lot-for-lot order quantity and it also takes the rounding quantity or the minimum and maximum lot sizes into account;
"2" - Lot size as in short-term period: the system calculates the order quantity using the lot-sizing procedure specified in the short-term period.
If you maintain the field as blank, the planned orders or purchase requisitions generated will not consider the rounding value, but have the same quantity as the orders.
Please note that under this circumstance, when converting the purchase requisitions to purchase orders, the rounding value will be considered, as per KBA 2061448.
If you want the planned orders or purchase requisitions generated by MRP always to consider the rounding values, please maintain the corresponding configurations correctly in SSCUI 101112 - Check Lot-Sizing Procedures.
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