Have you created the material for the view General Plant Data / Storage 1 ?
Can you see any storage location in MMSC for the particular material ?
If you can see any one storage location in MMSC, then you can extend another storage location from MM17 for many materials in one shot.
If you got the message "Material not fully maintained for this transaction/event" in MMSC, then you have to create the material with General Plant Data / Storage 1 from MM01 or MM50.