In this step, you can set an indicator which is used to set only those schedule lines that have been transferred to the vendor.
You can firm schedule lines within the planning time fence (in the same way as planned orders or purchase requisitions) according to the master schedule item firming logic. The planning time fence is a number of days that is calculated into the future starting from the current date. Therefore, the last date of the planning time fence changes every day.
In the firming logic, existing schedule lines are also firmed as soon as they move into the planning time fence.
Schedule lines that lie outside the planning time fence and whose quantity is adjusted in the planning run due to a change of the requirements quantity are firmed with the new quantity as soon as the schedule lines move into the planning time fence.
The schedule lines are transferred to the vendor for the amount recorded in the stock/requirements list at the time of the data transfer.
If you only want to firm the schedule lines in the planning time fence that have been checked and transferred to the vendor, you can use the indicator, Only firm transmitted schedule lines . By selecting this indicator, the system only firms the schedule lines that have been sent to the vendor.
For schedule lines whose quantity has changed and which have moved into the planning time fence, the following occurs if this indicator has been set: if the MRP controller/purchaser does not confirm the procurement plan by sending the changed quantities to the vendor, the schedule line quantities that were sent to the vendor in the previous data transfer are firmed within the planning time fence. This guarantees that the system cannot firm any quantities that have not been checked. It also means that the vondor does not receive any messages for unchecked schedule line quantities.
Define the indicator per MRP group and allocate this MRP group to the materials for which this indicator is to be valid.
The message transfer is a purchasing function. You can find it in the purchasing menu, Outline agreement -> Scheduling agreement -> Messages -> Print/transmit.