> ## Documentation Index > Fetch the complete documentation index at: https://www.twicecommerce.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # How to reserve scanned items > Reserve every unit in the Scanned items drawer at once, with one title, one location and one window, and confirm any order the reservation takes a unit from. > [card] [Open in TWICE Admin](https://admin.twicecommerce.com/inventory/stock-items) > > inventory/stock-items Take every scanned unit out of use for the same window, such as a yearly service or a trade fair, in one go: scan them, then choose **Create reservation**. [Stock item events](https://www.twicecommerce.com/docs/concepts/inventory/events.md#reservation-priority) explains how a reservation holds its dates and when it takes a unit from an order. Follow [Reserve a stock item](https://www.twicecommerce.com/docs/guides/inventory/reserve-a-stock-item.md) to reserve one unit from its own page. ## Prerequisites > [!WARNING] > > **Required permissions:** > > * **Create and edit stock items** (`inventory:stock_item_events:create`) to reserve the units. Every built-in role holds it, Member included. See [Users & Roles](https://www.twicecommerce.com/docs/settings/users-roles.md). > [!NOTE] > > **Have ready before you start:** > > * **The units**, with their codes on them, and a barcode scanner. Or tick their rows on **Inventory → Stock items** instead, which carries the same **More**. > * **A title**, such as Yearly service, and any detail for the comment. > * **When the units go out of use and when they are back**, or the knowledge that the end is not known yet. ## The walkthrough **1. Scan the units** Scan the code on each unit you are taking out of use, from any page except an order. The units collect in the **Scanned items** drawer at the bottom of the screen, every row ticked. Untick any unit that is not part of this reservation. **2. Choose Create reservation** Click **More** in the drawer's header and choose **Create reservation**. A dialog opens titled, for example, **Reserve 3 items**, and reads **"The same reservation is created on every selected item."** **3. Name the reservation** Enter a **Title**, for example Yearly service, and any detail in **Comment**. The title names the reservation on each stock item's **Events** tab. The dialog reserves nothing without a title. **4. Check the location** Check **Location**, where the units are held while they are reserved. It starts at the location that stocks all of them. Pick one when it starts empty, as it does for units stocked at different locations. A notice under the field names any unit not stocked there, and that unit is left out. **5. Set the dates** Set **Start date**, which opens at now, and **End date**, when the units are back in use. If you do not know the end yet, tick **No end date**. The units then stay reserved until you edit or delete each reservation. **6. Reserve the units** Click **Reserve** at the bottom of the dialog. If the units have room over your dates, the dialog closes, a notice such as **3 items reserved** confirms it, and the reserved units leave the drawer. If a unit has none, a confirmation opens first. **7. Confirm what the reservation takes over** If **"Existing orders and reservations will be affected"** opens, read the list: each row names a stock item and the order or reservation that loses it over your dates. To go ahead, tick **"Please confirm you understand the impact"** and click **Add reservation**. To keep them, click **Cancel** and change the dates. ## How do I know it worked? * **A notice counts the units reserved**, for example **3 items reserved**, and they leave the drawer. * **Each stock item's Events tab lists the reservation** under your title, with its dates and location. * **Each order the confirmation listed** shows **Unavailable stock items** until it has another unit. See [Resolve a stock item conflict](https://www.twicecommerce.com/docs/guides/orders/resolve-stock-item-conflicts.md). ## Troubleshooting / common pitfalls > [accordion] A red notice says items could not be reserved > > It reads, for example, **"2 items could not be reserved: no unit is free over these dates"**. Every unit of their stock item is taken over your dates, so nothing was reserved for them and they stay in the drawer. Change the dates and reserve them again. See [Reservation priority](https://www.twicecommerce.com/docs/concepts/inventory/events.md#reservation-priority). > [accordion] Location says none of these items are stocked there > > **"None of these items are stocked at this location"** means no scanned unit is stocked at that location on the start date. Pick the location that stocks them, or move them there first. See [Move a stock item to another location](https://www.twicecommerce.com/docs/guides/inventory/move-a-stock-item-to-another-location.md). > [accordion] A stock item shows several reservations with the same title > > Each unit gets a reservation of its own, so a stock item with identical units that you scanned three times shows three. Edit or delete each one on its own. See [Delete a reservation](https://www.twicecommerce.com/docs/guides/inventory/delete-a-reservation.md). ## Related articles > [card] [Stock item events](https://www.twicecommerce.com/docs/concepts/inventory/events.md) > > How a reservation holds its dates, and when it takes a unit from an order. > [card] [Scanning and editing stock](https://www.twicecommerce.com/docs/guides/inventory/stock-codes-and-barcodes) > > Every walkthrough for scanning stock items and changing them in bulk. > [card] [Scan stock items](https://www.twicecommerce.com/docs/guides/inventory/scan-stock-items.md) > > Collect the units by their codes first. > [card] [Reserve a stock item](https://www.twicecommerce.com/docs/guides/inventory/reserve-a-stock-item.md) > > Reserve one unit from its Events tab. > [card] [Make scanned items available](https://www.twicecommerce.com/docs/guides/inventory/make-scanned-items-available.md) > > Take scanned units off their reservations again. > [card] [Resolve a stock item conflict](https://www.twicecommerce.com/docs/guides/orders/resolve-stock-item-conflicts.md) > > Put another unit on an order a reservation took one from. 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