SAP Auto-ID Infrastructure (SAP AII) integrated with SAP Extended Warehouse Management (EWM) is to connect Radio Frequency Identification (RFID) hardware with warehouse software. It acts as a middleware layer that translates raw tag reads from RFID readers into clear business actions inside EWM, enabling touch-free tracking, automated goods receipt, loading, and packing.
SAP Auto-ID Infrastructure (AII) is a specialized software product that requires its own separate product license from SAP, as it is not automatically bundled free with core SAP ERP or S/4HANA licenses.
***** you can integrate RFID with SAP EWM without SAP Auto-ID Infrastructure (AII) by using third-party middleware or custom edge applications. These alternative tools capture raw RFID tag reads, filter the data, and communicate directly with SAP EWM via RFC (Remote Function Call) or APIs/Web Service *****Core Functions of SAP AII in EWM:
- Device Control: Manages and coordinates RFID readers, smart antennas, and RFID printers on the warehouse floor.
- Data Filtering & Translation: Takes raw, high-volume RFID signals and decodes unique identifiers like Electronic Product Codes (EPCs) into actionable business context.
- Automated Process Triggering: Communicates via web services with SAP EWM to instantly execute warehouse tasks, such as confirming a pick, finalizing a putaway, or posting goods receipt/issue without manual scanning.
- Label and Tag Management: Controls the printing, encoding, and rewriting of RFID smart labels attached to handling units or products.
When SAP AII is Used vs. Not Used:
- Not Mandatory (Standard EWM): Standard inbound/outbound delivery processing, storage control, stock management, and RF (Radio Frequency) barcode scanning via mobile devices operate directly within EWM and S/4HANA.
- Mandatory Only for RFID Scenarios: If you use real-time RFID smart tags, gate readers, or sensor hardware that requires raw signal filtering and device management before hitting the core warehouse system, AII acts as the specific middleware layer.
SAP references:
https://help.sap.com//SAP_Auto-ID_Infrastructure_51__Security_GuideE.PDF
https://help.sap.com/Integration with SAP Auto-ID Infrastructure/
https://help.sap.com/Using SAP Auto-ID Infrastructure 7.1
