The Siemens 6ES7997-1DC00-4BA0 is a Solution Partner WinCC software license — not a hardware module, but the SCADA runtime or engineering license tied to the WinCC ecosystem. This is what you order when the BOM calls for the software seat, not a PLC I/O card.
Estimated lead time of 1-2 weeks suggests it is typically a quoted-to-order item rather than a stocked shelf product. For a BOM freeze or scheduled project, submit an RFQ to lock allocation and confirm the exact license variant (runtime, RC, or engineering) matches your WinCC version slot.