Here we would like to draw your attention to WPOS_MASTER transaction code in SAP. As we know it is being used in the SAP SD-POS (POS Interface in SD) component which is coming under SD module (Sales & Distribution).WPOS_MASTER is a transaction code used for POS inbound master data in SAP.
It comes under the package WPOS.
Transaction WPOS_MASTER technical data table
|Purpose||POS inbound master data|