Keep the agreed contents attached so the answer covers the full kit. The cable may be your immediate concern, but a reply about that one item shouldn't silently close the rest.

The final kit list is attached. I've asked for available items, unavailable items and a proposed dispatch date, not just another next-shipment message.

Have maintenance identify the additional cable too. If a different spare is offered later, someone must compare it with the actual fitted arrangement.

That doesn't mean a substitute has been offered. Keep it a contingency until the seller answers the present list.

Agreed. I was thinking ahead to receiving, not reporting a new offer.

Does the workshop stock record still say the kit is supplied? That is worth checking now, independently of the seller's answer.

It said included in package, which was misleading. Stores now shows the missing kit separately from the received main hardware.

Has the seller answered availability yet?

They say the kit hasn't shipped and ask whether it can wait for our next order. We haven't planned another order.

Then that is a new condition to discuss, not a delivery plan you already agreed to.

Ask for a separate-supply proposal with the costs and date stated. You can evaluate it without inventing another purchase just to make the promised kit move.

I've requested that and said there is no next order scheduled. No proposal received, no extra freight agreed.

Who can receive and check a separate parcel if they do offer one? Small spares can sit unallocated when everyone expects a robot-sized delivery.

Stores has a named recipient and the kit list ready. That is preparation only; nothing has been dispatched. Thanks, Chen, correcting the stock record has already stopped one mistaken request to fetch the cable from the shelf.